Nasser Ashgriz

Practice Areas

Dr. Ashgriz is an Intellectual property lawyer and is a registered U.S. patent agent.  He is based in our Toronto office.

Experience

Dr. Ashgriz has extensive background and experience in

• Providing patent infringement, validity and availability opinions
• Patent filing and prosecution
• Drafting licensing agreements for transfer of technology

Apart from his legal experience, Dr Ashgriz has a strong academic background in that he has spent a number of years as a professor and researcher at the State University of New York at Buffalo and more recently at the University of Toronto.

Professional Activities

Dr. Ashgriz is an active member of the following organizations:

• Ontario Society of Professional Engineers
• United States Patent & Trade Mark Office
• American Society of Mechanical Engineers

Credentials & Awards

Dr. Ashgriz received his Ph.D. in Mechanical Engineering from Carnegie-Mellon University in Pittsburgh, Pennsylvania, in 1984.  He received his law degree (J.D.) from the State University of New York at Buffalo, in 1996 and is admitted to the New York bar.  He is a registered patent attorney with the U.S. patent and trademark office.  He is also recipient of TOKTEN Award from the United Nations, New York, NY(1995); Best Paper Award from the Combustion Institute, Columbus, OH (1992; National Science Foundation Initiation Award, Washington, DC, (1990); Ralph Teetor Award from the Society of Automotive Engineers, Detroit, MI (1988); Two Bennet Prize Awards from Carnegie-Mellon University, Pittsburgh, PA (1981 & 1983). In recognition of outstanding scholarly work in Mechanical Engineering.

Contact Information

E-mail: nashgriz@heydary.com
Telephone: (416) 972-9001 Ext. 205
Fax: (416) 972-9940

List of Publications (Categorized according to Industry)
Authored & Co-authored

Auto Industry

 Fuel Cell Engines

“Numerical Multiphase Flow Model to Study Channel Flow Dynamics of PEM Fuel Cell,” SAE World Congress, Paper number 07PFL-730, Detroit, Michigan, April 16-19, 2007.

“Numerical model to study water management in the channel of PEM Fuel cells” 2006 Annual Conference of Automotive Parts Associations, May. 2006, Hamilton, Canada.

“Study of Pressure drop in the channel of PEM Fuel cell as the result of water droplet presence”, 2 nd International Conference of Green Energy, June 25-29, 2006, Oshawa, Canada.

“Effects of Oxidant Fluid Properties on the Mobility of Water Droplet in the Channel of PEM Fuel Cell,” International Journal of Energy research, Vol. 29, 2005, pp. 1027-1040.

“Flow Induced Dynamics of a Pinned Droplet on the Surface of a Channel”, Proceedings of IMECE 2005, Paper Number 81757, 2005 ASME International Mechanical Engineering Congress & Exposition, Orlando, Florida, Nov. 5-11, 2005.

Diesel Engines

“ Naturally Induced Oscillation in Twin-Fluid Atomizers , ” 18 th Annual Conference on Liquid Atomization and Spray Systems, Irvine, CA, May 22-25, 2005.

"Ignition Probability and Absolute Minimum Ignition Energy in Fuel Sprays,'' Combustion Science and Technology, Vol. 86, pp. 45-65, 1992.

"Satellite Formation and Merging in Liquid Jet Breakup,'' Proceedings of the Royal Society of London A, Vol. 433, pp. 269-286, 1991.

"Variation of Drag Coefficient in an Interacting Drop Stream,'' Journal of Experiments in Fluids, Vol. 11, pp. 1-8, 1991.

"Coalescence and separation in binary collisions of liquid drops,'' Journal of Fluid Mechanics, Vol. 221, pp. 183-204, 1990.

"Ignition and Flame Propagation in Dense Sprays,'' AICHE Meeting, Washington D. C., 1988.

"Coalescence Efficiencies of Fuel Droplets,'' International Communication in Heat and Mass Transfer, Vol. 16, No. 1, pp. 11-20, 1989.

"On the Flame Propagation Rates in Fuel Sprays,'' Journal of Non-Equilibrium Thermodynamics, Vol. 14, No. 2, pp. 199-204, 1989.

"Flame Structure in Fuel Rich Mono-Dispersed Sprays,'' International Communications in Heat and Mass Transfer, Vol. 15, pp. 765-772, 1988.

"Binary Collision Dynamics of Fuel Droplets," International Journal of Heat and Fluid Flow, Vol. 8, No. 3, pp. 205-210, 1987.

"Combustion Studies in Fuel Rich Idealized Sprays,'' Physico-Chemical Hydrodynamics, Vol. 8, No. 3, pp. 335-347, 1987.

"Development of a Controlled Spray Generator," Review of Scientific Instruments, Vol. 58, No. 7, pp. 1291-1296, 1987.

"Progress on Impulse Jet Droplet Generator for Laminar Spray Combustion Experiments,'' Chemical and Physical Processes in Combustion, The combustion Institute, p. 39.1, Nov. 1980.

Bio-Fuel Engines

“Ultra Clean Biodiesel Engines,” Auto21 2006 Scientific Conference, Vancouver, British Columbia, June 13 and 14, 2006.

“Ultra Clean Biodiesel Engines,” Auto21 2006 HQP Conference, May 15-17, 2006, Barrie, ON, Canada.

“Atomization of Corn Syrup using Splash Plate Nozzles,” 2 nd International Conference of Green Energy, June 25-29, 2006, Oshawa, Canada.

Energy, Combustion and Environment

“Droplet Combustion of Chlorinated Benzenes, Alkanes, and their Mixtures in a Dry Atmosphere,” Environmental Engineering Science, Vol. 20, No. 2, pp. 125-133, MAR-APR, 2003.

A Flux Method for Tracking Convoluted Premixed Flame Fronts, Chapter in "Advanced Computation & Analysis of Combustion." Editors: G.D. Roy, S.M., Frolov, and P. Givi, ENAS Publishers, Moscow, Russia, 1997.

“Chemically Reacting Liquid Droplet Flow Field Calculation,'' 8th International Symposium on Transport Phenomena in Combustion, July 17-20, Sanfrancisco, CA 1995.

"Combustion Characteristics of Chlorobenzene and Its Mixtures with Decane and Dodecane,'' Combustion Fundamentals and Applications, Central States Section Technical Meeting, The combustion Institute, pp. 133-138, April, 1992.

"Effect of Internal Fluid Motion on Drop Combustion,'' Combustion Fundamentals and Application, Central States Section Technical Meeting, The combustion Institute, pp. 198-203, April, 1992.

"Combustion Characteristics of Hazardous Liquid Waste,'' Department of Mechanical and Aerospace Engineering, State University of New York at Buffalo, Report No. LHWC-CRL-100300-91.

"Flame Impingement and Droplet Collisions,'' Physics of Fluids A, Vol. 1, No. 9, pp. 1440-1446, 1989.

"Effect of Droplet Interaction on the Flame Propagation Rate in Sprays,'' Chemical and Physical Processes in Combustion, The Combustion Institute, Nov. 1987.

"Flame Propagation Through a one Dimensional Air/Fuel Spray Mixture with Interactive Vaporization Between Droplets,'' ASME National Heat Transfer Conference, Pittsburgh, PA, 1987.

"Collision of two droplet streams in burning and non-burning conditions,'' AIAA north East regional conference, April 12-14, 1986.

"Observations of the collision of two non-burning and burning monodispersed droplet streams,'' Chemical and Physical Processes in Combustion, The Combustion Institute, Nov. 4-6, 1985.

Chemical Processing

“Flame Propagation Across Gelled Alkane-in-Water Emulsions,” Spill Science & Technology Bulletin, Vol. 8, No. 4, pp. 391-389, 2003.

“Coalescence Collision of Liquid Drops,” Int. Comm. in Heat and Mass Transfer, Vol. 46, Issue 1, January, 2003, pp. 77-89.

“ Microexplosion of Emulsified Fuel Drops,” Proceeding of the National Energy Conference, Energex 2000. Presented in the National Energy Conference, Las Vegas, Nevada, pp. 32-37, July 23-28, 2000.

Nonlinear Oscillation of Liquid Drops With Internal Circulation,'' Physics of Fluids, Vol. 10, Issue 5, pp. 1071-1082, May 1998.

"Ferrofluid Surface Control for Droplet Formation," Annual Meeting of the Division of Fluid Dynamics of American Physical Society, Nov. 20-22, Syracuse, NY, 1996.

"Ferrofluid Droplet Formation by Vibrating Stimulation," Annual Meeting of the Division of Fluid Dynamics of American Physical Society, Nov. 20-22, Syracuse, NY, 1996.

"On the Mixing Mechanisms in a Pair of Impinging Jets,'' AIAA-1995-2421, ASME, SAE, and ASEE, Joint Propulsion Conference and Exhibit, 31st, San Diego, CA, July 10-12, 1995.

"Flame Propagation Across Alkane-in-Water Emulsions,'' Combustion Fundamentals and Applications, Central States Section Technical Meeting, The combustion Institute, pp. 174-179, April, 1992.

Numerical Simulation of Capillary Driven Flows in Liquid Drops and Films, A section in "Colloquium on Drops and Bubbles" (1988). Editor: Taylor J. Wang, American Institute of Physics Press, N.Y.

"Fuel Droplet Collision in Reactive Environments,'' Twenty-Second Symposium (Int.) on Combustion, Poster Session, The Combustion Institute, Seattle, Washington, August 14-19, 1988.

"Coalescence Collision of Fuel Droplets," AIAA 25th Aerospace Sciences Meeting, Paper AIAA-87-0138, Reno, Nevada, January 12-15, 1987.

Materials and Manufacturing

“Preparation of Aluminum/Silicon Carbide Metal Matrix Composites Using Centrifugal Atomization,” accepted Journal of Powder Technology.

“On Preparation of Non-Disrupted Particles by Spray Pyrolysis,” J. of Particle Particle Systems and Characteristics, in press, 2008.

“Effect of Atomization Method on the Morphology of Spray Generated Particles,” ASME Journal of Engineering Materials and Technology, Vol. 129, No. 1, pp: 131-142, January 2007.

“Effect of Reactor Ambient Pressure on the Morphology of Spray Dried Magnesium Sulphate Powders,” TheCanadian Journal of Chemical Engineering, Vol. 129, No. 1, pp: 131-142, January 2007.

"Effect of Precursor, Ambient Pressure, and Temperature on the Morphology, Crystallinity, and Decomposition of Powders Prepared by Spray Pyrolysis and Drying", Journal of Powder Technology, Vol. 167, pp:149-159, 2006.

“Modeling of Particle Formation by Spray Pyrolysis using Droplet Internal Circulation, International Communications in Heat and Mass Transfer, Vol. 33, pp: 863-871, 2006.

“Characteristics of Powders Produced in Spray Drying and Spray Pyrolysis,” 19 th Annual Conference on Liquid Atomization and Spray Systems, Toronto, Canada, May 23-26, 2006.

“The effect of atomization method on the morphology of spray dried particles”. Proceedings of IMECE 2005, Paper Number 81896, 2005 ASME International Mechanical Engineering Congress & Exposition, Orlando, Florida, Nov. 5-11, 2005.

“The effect of pressure on the morphology of the particles produced by spray pyrolysis,” 55th international conference of the Canadian society of chemical engineers, October 2005.

“Interacting Drops and Bubbles in Material Processing,” 2004 ASME International Mechanical Engineering Congress, November 13-19, 2004, Anaheim, California.

“Preparation of Zirconia Particles in Low Pressures by Spray Pyrolysis. Emerging Materials Knowledge Conference, June 2005, Toronto, Canada.

"Instability of Liquid Coatings on Cylindrical Surfaces,'' Physics of Fluids., Vol. 7, pp. 2143-2153, 1995.

Pulp and Paper Industry

“Characteristic of Liquid Sheet Sprays Formed by Splash Plate Nozzles,” Journal of Experiments in Fluids , Vol. 44, No. 1, January 2008.

“Effect of Viscosity on the Breakup Length of Liquid Sheets Formed by Splash Plate Nozzles,” 19 th Annual Conference on Liquid Atomization and Spray Systems, Toronto, Canada, May 23-26, 2006.

“Computational Characterization of Splashplate Atomizers,” ILASS America, 17 th Annual Conference on Liquid Atomization and Spray Systems, Arlington, VA, May 16-19, 2004.

“Film Thickness and Velocity Distribution in a Splash-Plate Atomizer: Comparison between Simulations and Experiments,” ICLASS July 13, 2003, Sorento, Italy.

“Numerical Simulation of the Black Liquor Spray Characteristics in Splash-Plate Nozzles”, TAPPI Journal, May 2006.

“Impaction of a Droplet on an Orifice Plate,” Physics of Fluids, Vol 16, No. 2, pp: 400-411, February 2004.

“Nonlinear Penetration of Liquid Drops into Capillaries,” Journal of Colloid and Interface Science, Vol. 270, pp. 146-162, 2004.

"Sensitivity of the Spreading Rate of a Liquid Droplet on a Surface to the Approximation of the Contact Angle." International Journal of Modeling & Simulation, Vol. 19, No 3, 1999.

"Segregation of Drop Size and Velocity in Jet Impinging Splash-plate Atomizers,'' International Journal of Heat and FluidFlow, Vol. 17, No. 5, pp. 509-516, 1996.

BioEngineering

“Planar Dynamics of Two Interacting Bubbles in an Acoustic Field,” Journal of Applied Mathematics and Computations, Vol. 157, 2004, pp: 775-824.

“Planar Dynamics of Two Interacting Bubbles in an Acoustic Field,” Journal of Applied Mathematics and Computations, Vol. 157, 2004, pp: 775-824.

“Numerical Modeling of a Cell Deformation Passing Through a Nozzle to Determine its Viscosity and Surface Tension,” ICCFD3, International Conference on Computational Fluid Dynamics, July 2004, Toronto, Canada.

“Numerical Simulation of Deformation and Shape Recovery of Drops Passing Through a Nozzle,” ISPS 2004, the second international conference of physical science in space, May 2004, Toronto, Canada.

“Design and Manufacturing of Novel Liquid Injectors and Inhalers: Spray Characteristics. Materials and Manufacturing of Ontario (MMO) exhibition and conference, Toronto, Canada, 2003

"Dynamics of Two Interacting Bubbles in an Acoustic Field," Journal of Fluid Mechanics, Vol. 389, pp. 137-168, 1999.

"Planar Dynamics of Two Bubbles Interacting Through Secondary Bjerknes Forces," ASME paper presented at ASME/FEDSM'98, Washington, DC. 21-25 June 1998.

"Nonlinear Bubble Interactions in Acoustic Pressure Fields,'' Third Microgravity Fluid Physics Conference, Cleveland, Ohio, June 13-15, 1996.

"Dancing Bubbles and Drops,'' 9th Annual Conference on Liquid Atomization and Spray Systems, San Francisco, CA, May 19th-22nd, 1996.

Aerospace and Defense

Gas Turbines Engines

 “A Model for Deformation of Liquid Jets and Droplets in Gaseous Crossflows,” 20 th Annual Conference on Liquid Atomization and Spray Systems, Chicago, IL, May 14-18, 2007.

“Edge Instability and Velocity of Liquid Sheets Formed by Two Impinging Jets”, Journal of Atomization and Sprays, Vol. 17, No. 1, pp: 71-91 (2007).

“Characteristics of Liquid Sheets Formed by Two Impinging Jets”, Physics of Fluids, Vol. 18, No. 087104, 2006.

“Turbulence Models for Flows with Free Surfaces and Interfaces,” American Institute of Aeronautics and Astronautics (AIAA) Journal, Vol. 44, No. 7, pp: 1454-1462, July 2006.

“A Model for the Penetration of a Liquid Jet in Cross Flow”, 19th Annual Conference on Liquid Atomization and Spray Systems, Toronto, Canada, May 23-26, 2006.

“On the Trajectory of a Liquid Jet in Cross Flow”, 10 th International Congress on Liquid Atomization and Spray Systems, ICLASS-2006, Kyoto, Japan, August 27- Sept 1, 2006.

“Primary Breakup of a Liquid Jet in Gaseous Cross Flow: Droplet Size Distribution”, 10 th International Congress on Liquid Atomization and Spray Systems, ICLASS-2006, Kyoto, Japan, August 27- Sept 1, 2006.

“Modeling Liquid Film Formation and Breakup in an Industrial Spray Nozzle,” ILASS America, 15 th Annual Conference on Liquid Atomization and Spray Systems, May 14 - 17, 2002, Madison, Wisconsin.

“Nonlinear Instability of an Evaporating Capillary Jet,” AIAA Journal, Vol. 39, No. 9, pp. 1728-1734, September, 2001.

 Rockets Engines

"On the Mixing Mechanisms in a Pair of Impinging Jets,'' AIAA Journal of Propulsion and Power, Vol. 17, No. 3 (736-749), 2001.

"Solid Propellant Grain Design by the Volume Fraction Technique,'' Journal of Aerospace Engineering, Part G., Proc. Inst. Mech. Engrs., Vol. 210, No. 3, pp. 209-220, 1996.

"Solid Propellant Grain Design By an Interface Reconstruction Scheme,'' AIAA Journal of Spacecraft and Rockets, Vol. 31, No. 5, 1994.

"Effect of Flow Rate on the Spray Characteristics of Impinging Water Jets,'' AIAA Journal of Propulsion and Power, Vol. 8, No. 5, pp. 980-986, 1992.

"Solid Propellant Grain Design by an Interface Reconstruction Scheme,'' Combustion Fundamentals and Applications, Central States Section Technical Meeting, The combustion Institute, pp. 25-30, April, 1992.

"Effect of the Spray Characteristics on the Performance of a Bipropellant Liquid Rocket Engine,'' Combustion Fundamentals and Applications, Central States Section Technical Meeting, The combustion Institute, pp. 31-36, April, 1992.

"Impinging Jet Spray Characteristics,'' Proceedings of the 5th Annual Conference on Liquid Atomization and Spray Systems, San Ramon, California, pp. 79-84, May 18-20, 1992.

Nanotechnology

Numerical Techniques for Free Surface Flows, Chapter in “Encyclopedia of Micro-Fluidics and Nano-Fluidics, Springer Publishing, in press, 2008.

“Modeling of Nanoparticle Formation During Spray Pyrolysis,” Journal ofNanotechnology, Vol. 17, pp. 1674-1685, 2006.

“Investigation of Suspended Solution Droplet Evaporation and Particle Evolution in Reduced Pressures,” 56th Conference of Canadian Society of Chemical Engineers, Sherbrooke, QC, CANADA, October 2006.

“Effect of Operating Conditions on the Characteristics of Micro- and Nano-Powders Synthesized by Spray Drying and Pyrolysis,” International Aerosol Conference, September 2006, St. Paul, MN, USA.

“Modeling Nanoparticle Formation during Spray Pyrolysis,” 55th international conference of the Canadian society of chemical engineers, October 2005.

Printing Industry

“Apparent Solidification Contact Angles of Micro-Droplets Deposited on Solid Surfaces,” Contact Angle, Wettablity and Adhesion, Vol. 5, pp: 1-12, 2008 .

“Deposition of Molted Ink Droplets on a Solid Surface,” Journal of Imaging Science and Technology, in press.

“Drawback during Deposition of Overlapping Molten Wax Droplets” J. of manufacturing science & engineering, in press.

“Solidification Contact Angles of Molten Droplets Deposited on Solid Surfaces,” Journal of Material Science, Vol. 42, pp: 9511-9523, 2007.

“Experimental Study on Printing Process in Offset Inkjet Printers,” 19 th Annual Conference on Liquid Atomization and Spray Systems, Toronto, Canada, May 23-26, 2006.

“Apparent Solidification Contact Angles of Micro-droplets of Hot Melt Ink Deposited on Solid Surfaces,”5 th International Symposium on Contact Angle, Wettability and Adhesion, Toronto Canada, June 21-23, 2006.

“Surface Morphologies of Hot-melt Ink Dots Formed on Solid Surfaces,” Emerging Materials Knowledge Conference, Toronto, Canada, June 27, 2005.

"Experimental Study on Micro-droplets of Molten Wax Impacting on Solid Surface," 35 th AIAA Fluid Dynamics Conference and Exhibit, AIAA-2005-5036, June 6 – 9, 2005. Toronto, Ontario, Canada.

“Simulation of Droplet Drawback in Inkjet Printing, Canadian Society of Mechanical Engineering, June 1-4, 2004, London, Ontario, Canada.

Computer Software and Simulation

 “An Improved Three-Dimensional Model for Pressure Calculation in Free Surface Flows,” International Journal of Computational Fluid Dynamics, Vol., No., 2007.

“An Improved Method for Calculation of Interface Pressure Force in PLIC-VOF Methods,” European Journal of Mechanics/Fluids.

“Interface Pressure Calculation Based on Conservation of Momentum for Front Capturing Methods, Journal of Computational Physics. Volume: 203, Issue: 1, February 10, 2005, pp. 154-175.

“A Computational Lagrangian-Eulerian Advection Remap for Free Surface Flows,” Int. Journal of Numerical Methods in Fluids, Vol. 44, pp. 1-32, 2004.

“A New Surface Tension Force Model for Volume Tracking Methods.” The 10 th Asian Congress of Fluid Mechanics, May 17-21, 2004, Peradeniya, Sri Lanka.

Computational Fluid Dynamics, Chapter 24 in “Fluid Flow Handbook” McGraw Hill Publishing, ISBN 0-07-136372-6, 2002.

“Advection of Interfaces in Unstructured Grids," Annual Meeting of the Division of Fluid Dynamics of American Physical Society, Philadelphia, PA, Nov. 23-25, 1998.

“A Spine-Flux Method for Simulating Free Surface Flows,'' Journal of Computational Physics, Vol. 122, pp. 367-379, 1995.

“Advection of Axisymmetric Interfaces by Volume of Fluid Method,'' Int. Journal of Numerical Methods in Fluids, Vol. 20, No. 10, pp. 1337-1361, 1995.

“A Hybrid Finite Element - Volume of Fluid Method for Simulating Free Surface Flows and Interfaces,'' Int. Journal of Numerical Methods in Fluids, Vol. 20, No. 10, pp. 1363-1380, 1995.

“A Height-Flux Method For Simulating Free Surface Flows And Interfaces,'' Int. Journal of Numerical Methods in Fluids, Vol. 17, pp. 1035-1054, 1993.

“A Hybrid Finite Element - Volume of Fluid Method for Simulating Liquid Atomization," Proceedings of the 6 th Annual Conference on Liquid Atomization and Spray Systems, Worcester, Massachusetts, pp. 225-229, May 17-19, 1993.

“FLAIR: Flux Line-segment Advection and Interface Reconstruction,'' Journal of Computational Physics , Vol. 93, No. 2, pp. 449-46, 1991.

“Curvature Calculation in Interfaces,'' Journal ofComputational Physics, Vol. 84, No. 2, pp. 483-491, 1989.

MEMS (Microelectromechanical Systems)

“Numerical Simulation of Growth and Collapse of a Bubble Induced by a Pulsed Micro-Heater,” Journal of Microelectromechanical Systems, Vol. 13, No. 5, October 2004, pp: 857-869.

“Experimental Study of Bubble Dynamics on Micro Heaters Induced by Pulse Heating,” ASME Journal of Heat Transfer, Vol. 126, No. 2, pp: 259-271, April 2004.

Mass Spectrometry

“ A New Approach to Atomization of an Electrospray Ion Source,” ASMS, June 2007, Indianapolis, Indiana.

“ 3-Dimensional Computation of a Laminar Flow Interface for LC/MS/MS,” ASMS, June 2007, Indianapolis, Indiana.

“Instability of a Capillary Liquid Jet with a Mass Source,” Canadian Society of Mechanical Engineering, June 1-4, 2004, London, Ontario, Canada.

Electronic Cooling

"Flow Behavior in Thin-Gapped Diamond-Shape Channels with Pins,'' Journal of Fluid Engineering, Transactions of the ASME, Vol. 115, pp. 175, 1993.

"Development and Application of Flow Visualization Techniques for Cooled Structures,'' Final Report to Bell Aerospace Company, Department of Mechanical and Aerospace Engineering, State University of New York, Report No. FVCS-30001-89, January, 1989.

Imaging

“Interferometric Particle Imaging of Liquid Jets in Crossflows,” 1 9 th Annual Conference on Liquid Atomization and Spray Systems, Toronto, Canada, May 23-26, 2006.

"Whole Field Spray Sizing By Tomographic Imaging, '' Journal of Atomization and Sprays, Vol. 6, pp. 45-73, 1995.

"Spray Sizing by Tomographic Imaging,'' Proceedings of the 6 th Annual Conference on Liquid Atomization and Spray Systems, Worcester, Massachusetts, pp. 147-151, May 17-19, 1993.

"Application of Diffraction Tomography to Flame Imaging,'' Chemical and Physical Processes in Combustion, twenty-second Fall Technical Meeting of the Eastern Section of the Combustion Institute, 1988.

Other Publications

“Instability of a Liquid Jet with Mass Addition,” Journal ofPhysics of Fluids, Vol 17, 2005. pp. 112102.

"The Rayleigh-Taylor Instability of Viscous Fluid Layers,'' Physics of Fluids, Vol. 9, Issue 6, pp. 1635-1649, June 1997.

"Instability of a Liquid Jets Subject to Disturbances Composed of Two Wavenumbers,'' Journal of Fluid Mechanics, Vol. 320, pp. 185-210, August 1996.

"Non-linear Instability of Liquid Jets with Thermocapillarity,'' Journal of Fluid Mechanics, Vol. 283, pp. 97-123, 1995.

"Temporal Analysis of Capillary Jet Breakup,'' Journal of Fluid Mechanics, Vol. 291, pp. 163-190, 1995.

"Nonlinear Dynamics of Capillary Bridges: Experiments,'' Journal of Fluid Mechanics, Vol. 255, pp. 411-435, 1993.

“ Discrete Phase Based Method (DPM) of Modeling Sheet Formation and Breakup ”, ILASS 2007, Chicago, USA, May 2007.

“Turbulence generated primary breakup,” 17 th Annual Conference on Liquid Atomization and Spray Systems, Arlington, VA, May 2004.

“A new formulation of interface equation for volume tracking on arbitrary meshes,” 18 th Annual Conference on Liquid Atomization and Spray Systems, Irvine, CA, May 22-25, 2005.

“Turbulence Effects on the interface evolution for high velocity liquid jets,” Invited paper, Int. Symp. Heat Mass Transfer Spray Systems, Antalya, Turkey, Jun. 5-10, 2005.

“Turbulence Generated Primary Breakup: Spreading of a Liquid Jet,” ILASS America, 17 th Annual Conference on Liquid Atomization and Spray Systems, Arlington, VA, May 16-19, 2004.

“Numerical Simulation of the Primary Atomization of a Turbulent Jet,” AIAA-2004-1283, 42nd AIAA Aerospace Sciences Meeting and Exhibit, Reno, Nevada, Jan. 5-8, 2004.

“New Turbulence Models for Interfacial Flows and Their Applications in Kelvin-Helmholtz Instability,” ILASS America, 16 th Annual Conference in Liquid Atomization and Spray Systems, May 18 - 21, 2003, Monterey, California.

“Droplet-on-Orifice Impacting Droplet Generator”, ILASS America, 14 th Annual Conference on Liquid Atomization and Spray Systems, May 20 - 23, Dearborn, Michigan, 2001.

A First Book In Thermodynamics , Publisher: John Wiley & Sons, ISBN 0-471-37822-4, 1999.

"Stretching Separation in the Binary Collision of Liquid Drops," ILASS America, 12 th Annual Conference on Liquid Atomization and Spray Systems, May 21 - 24, Indianapolis, Indiana, 1999.

"Satellite Size Control in Liquid Jets Using Modulated Amplitude Disturbances,'' Proceedings of the 7th Annual Conference on Liquid Atomization and Spray Systems, May 31 - June 3, Bellevue, Washington, 1994.

"Numerical Simulation of Collision of Two-Dimensional Drops,'' Proceedings of the 5th Annual Conference on Liquid Atomization and Spray Systems, San Ramon, California, pp. 110-115, May 18-20, 1992.

Seminars and Invited Lectures

“ Water management in PEM fuel cells,” FUEL CELL WORKSHOP, NRC-AUTO21-Waterloo,
Thursday, October 25, 2007, University of Waterloo.

“PEM fuel cell technology development in North America,” Korea Institute of Machinery and Materials, July 20, 2007, Daejeon, Korea.

“Modeling the Atomization Process,” School of Power Engineering, University of Shanghai for Science and Technology, July 2, 2007.

“Evolution of a Ink Dot in Offset Ink-Jet Printing”, University of Tokyo, Tokyo, Japan, August 31, 2006.

“Atomization and Spray Modeling from the First Principals,” Department of Aerospace Engineering, Seoul National University, Seoul, Korea, August 21, 2006.

“Atomization and Spray Modeling from the First Principals,” Department of Mechanical Eng., Korea Advanced Institute of Science and Technology, Daejeon, Korea, August 22, 2006.

“Atomization and Spray Modeling from the First Principals,” Korea Institute of Machinery and Materials, August 23, 2006, Daejeon, Korea.

“Texture of the ink droplets impacting on a surface”, Xerox Research Center, Toronto, Ontario, April 10, 2006.

“Droplet Drawback in Ink-jet Printing,” Xerox Research Center, Toronto, Ontario, May 13, 2004.

“ Numerical Modeling of Liquid Atomization,” General Motors, Detroit, MI, May 9, 2005.

“Numerical Modeling of Liquid Atomization,” Ford Motor Company, Detroit MI, May 10, 2005.

“Numerical Modeling of Black Liquor Spray Nozzle,” Presented at the International Energy Agency Meeting on Black Liquor and BioMass Gasification, Lynchburg, Virginia, February 14-16, 2005.

“Advancement of High-Temperature Black Liquor Gasification,” DOE meeting, Atlanta, November 4-5, 2004.

“Atomization of Black Liquor,” Presented at the International Energy Agency Meeting on Black Liquor and BioMass Gasification, Turku, Finland, August 30-September 1, 2004.

“A computer code for the design of the fuel Spray Nozzles,” IEA Annex XV, Biomass and Gasification Meeting, February 10-13, 2003, Atlanta, Georgia.

“Numerical Simulation of the Fluid Processes in Ink-Jet Printers: Jets, Drops and Bubbles,” Canadian Network of Computational Material Science (CNCMS), McMaster University, May 27, 2003.

“Numerical Simulation of the Coating Processes,” Canadian Network of Computational Material Science (CNCMS), McMaster University, May 27, 2003.

“Impaction and Solidification of Liquid Drops on Solid Surfaces,” Xerox Corporation, Webster, NY, December 12 th, 2002.

“Numerical Simulation of the Atomization Process,” Department of Mechanical Engineering, University of Pittsburgh, Pittsburgh, PA, Nov. 15 th, 2002.

“Atomization of Melts”, Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Canada, February, 16, 2001.

"Impaction of Ink Drops on Paper," XEROX Corp., Webster, NY, April 6, 1999.

"CLEAR-VOF: An Algorithm for Advection of Interfaces in Unstructured Grids," ANSYS, Inc., Southpointe, PA, July 21, 1998.

"Collision Dynamics of Liquid Drops," Institute of Fluid Mechanics, Friedrich-Alexander-University, Erlangen-Nurenberg, Germany, May 28, 1998.

"Interface Modeling," ANSYS, Inc., Southpointe, PA, Sept. 29, 1997.

"Dynamics of Bubble Clouds," presented at Nucleation Phenomena: Implications for Decompression Bubbles," Symposium/Workshop satellite of the Annual Meeting of the Great Lakes Chapter of the UHMS, DCIEM, North York, Ontario, October 24, 1997.

"Dancing Bubbles," Department of Mechanical Engineering, University of Rochester, Rochester NY, March 21, 1997.

"Droplet Collisions and Dancing Bubbles," Institute of Physics, National University of Mexico, Mexico City, October 11, 1996.

"Dancing Bubbles," Department of Mechanical Engineering, The State University of New York at Buffalo, Buffalo, NY, Sept. 10, 1996.

``Dancing Bubbles,'' Department of Mechanical Engineering, The University of British Columbia, Vancouver, Canada, May, 16, 1996.

``Dancing Bubbles,'' Department of Mechanical Engineering, University of Victoria, Victoria, CANADA, May, 15, 1996.

``Mixing in Impinging Jet Injectors,'' Phillips Laboratory, Edwards Air Force Base, California, August 5, 1994.

``Mechanisms of the Liquid Atomization,'' presentation at the Panel on the Liquid Atomization Modeling at the 7th Annual Conference on Liquid Atomization and Spray Systems, May 31 - June 3, Bellevue, Washington, 1994. Washington, 1994.

``Capillary and Thermocapillary Instability of Liquid Jets,'' Sibley School of Mechanical and Aerospace Engineering Seminar Series, Cornell University, Ithaca, New York, February 1, 1994.

``Combustion Behavior of Emulsified Hydrocarbon Droplets,'' 1993 Conference on Innovative Remedial Technology, Albany, New York, October 12-14, 1993.

``Impaction of Liquid Drops,'' Keynote speaker at the Second Fluid Dynamics Conference, Isfahan, Iran, July 6-8, 1993.

``Collision Dynamics of Liquid Drops,'' Department of Mechanical Engineering Guest Lecture Series, Carnegie-Mellon University, April 14, 1993.

``Advance Techniques in Turbulent Reacting Flows,'' Jet Propulsion Laboratories, Tehran, Iran, July 7, 1992.

``Physico-Chemical Processes in Sprays,'' Department of Mechanical and Aerospace Engineering, University of Toronto, April, 1992.

``Spray Atomization,'' Department of Mechanical Engineering, Rutgers University, New Brunswick, New Jersey, March, 1992.

``Physico-Chemical Processes in Liquid Sprays,'' Department of Mechanical Engineering, University of Hamedan, Hamedan, Iran, April 15, 1991.

``Physico-Chemical Processes in Liquid Sprays,'' Department of Mechanical Engineering Graduate Seminar Series, Polytechnic University of Tehran, Tehran, Iran, March 30, 1991.

``Physico-Chemical Processes in Liquid Sprays,'' Department of Mechanical Engineering Graduate Seminar Series, University of Tehran, Tehran, Iran, October 10, 1990.

``Spray Combustion Phenomena: An Experimental and Numerical Study,'' Department of Mechanical Engineering Graduate Seminar Series, San Diego State University, San Diego, CA, February 14, 1990.

"Physico-Chemical Processes in Liquid Sprays," Department of Mechanical Engineering, University of Utah, Salt Lake City, Utah, March 10, 1990.

``Physico-Chemical Processes in Liquid Sprays,'' Department of Mechanical and Aerospace Engineering Graduate Seminar Series, State University of New York at Buffalo, Buffalo, NY, December 7, 1989.

``Application of Diffraction Tomography to the Supersonic Reacting Jets,'' Hypersonic Grant Review Conference, State University of New York at Buffalo, Buffalo, NY, June 1989.

``Combustion of Hazardous Liquid Waste,'' Department of Civil Engineering Graduate Seminar Series, State University of New York at Buffalo, Buffalo, NY, April 21, 1989.

``Collision Among Reactive Droplets,'' 3rd International Colloquium on Drops and Bubbles, Monterey, CA, September 18-21, 1988.

``Numerical Modeling of Viscous Damping of Drop Oscillations,'' 3rd International Colloquium on Drops and Bubbles, Monterey, CA, September 18-21, 1988.

``Ignition and Flame Propagation in Dense Sprays,'' 5th Annual Iroquois Fluids Conference, Casawasco Conference Center, Lake Owasco, NY, March 25-27, 1988.

``Engineers Path for Success", Tau Beta Pi annual invited speaker, State University of New York, Buffalo, NY, December 1988.

``Coalescence Collision of Fuel Droplets,'' AIAA 25th Aerospace Sciences Meeting, Reno, Nevada, January 12-15, 1987.

``Observations of the Collision of Two Non-burning and Burning Monodispersed Droplet Streams,'' Fall Technical Meeting of the Combustion Institute, Eastern States Section, Philadelphia, PA, Nov. 1985.

``Flame propagation in Laminar Premixed Sprays,'' Mechanical Engineering Department, State University of New York at Buffalo, Buffalo, NY, May 1984.

``Idealized Spray Combustion Experiments,'' Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ, May, 1984.

``Experimental Study of combustion of Mono-dispersed Sprays,'' Mechanical Engineering Department, West Virginia University, Morgantown, WV, April, 1984.

``Combustion of Mono-dispersed premixed Sprays,'' Chrysler Corporation, Detroit, MI, March, 1984.

``Mechanism of Flame Propagation in Sprays,'' Fall Technical Meeting of the Combustion Institute, Eastern States Section, Clearwater Beach, Fl, Dec. 1984.

``Flame Propagation in Sprays,'' Bennet Price Award Contest Seminars, Carnegie-Mellon University, Pittsburgh, PA, 1983.

``Radiative Evaporation of Droplets in Sprays,'' Mechanical Engineering Seminar Series, Carnegie-Mellon University, Pittsburgh, PA 1981.