Publications

BOOKS AND BOOK CHAPTERS

  1. Handbook of Atomization and Sprays , N. Ashgriz, Editor, Publisher: Springer, 935 pages, 2011.
  2. A First Book In Thermodynamics, N. Ashgriz, Publisher: John Wiley & Sons, ISBN 0-471-37822-4, 1999.
  3. A Flux Method for Tracking Convoluted Premixed Flame Fronts, F. Mashayek, N. Ashgriz, F.A. Jaberi, and P. Givi. Chapter in “Advanced Computation & Analysis of Combustion.” Editors: G.D. Roy, S.M., Frolov, and P. Givi, ENAS Publishers, Moscow, Russia, 1997.
  4. Numerical Simulation of Capillary Driven Flows in Liquid Drops and Films, J.Y. Poo and N. Ashgriz. A section in “Colloquium on Drops and Bubbles” (1988). Editor: Taylor J. Wang, American Institute of Physics Press, N.Y.
  5. An Introduction to Computational Fluid Dynamics, N. Ashgriz and J. Mostaghimi. Chapter 24 in “Fluid Flow Handbook” McGraw-Hill Handbooks, J. Saleh Editor, 2002.
  6. Gallery of Flames, a reference book including significant photographs of flames and combustion processes, under preparation.

BUBBLE DYNAMICS

  1. Barbat, T., Ashgriz, N., and Liu, C. “Interaction Between Gas Bubbles in Acoustic Pressure Fields,” Journal of Fluid Mechanics, Vol. 389, pp. 165-190, 1999.
  2. Barbat, T., and Ashgriz, N., “Planar Dynamics of Two Bubbles Interacting Through Secondary Bjerknes Forces,” manuscript submitted to Journal of Fluid Engineering, Transactions of the ASME.

Proceedings:

  1. Barbat, T., and Ashgriz, N., “Planar Dynamics of Two Bubbles Interacting Through Secondary Bjerknes Forces,” ASME paper presented at ASME/FEDSM’98, Washington, DC. 21-25 June 1998.
  2. Barbat, T., and Ashgriz, N., “Two-body Problem of Bubbles in the Secondary Bjerknes Force Field,” Annual Meeting of the Division of Fluid Dynamics of American Physical Society, San Francisco, California, Nov. 23-25, 1997.
  3. Barbat, T., Ashgriz, N., and Liu, C.S., “Dynamics of Two Interactive Bubbles in An Acoustic Field – Part II: Experiments,” Annual Meeting of the Division of Fluid Dynamics of American Physical Society, Syracuse, New York, Nov. 20-22, 1996.
  4. Barbat, T., Ashgriz, N., and Liu, C.S., “Dynamics of Two Interactive Bubbles in An Acoustic Field – Part I: Theory,” Annual Meeting of the Division of Fluid Dynamics of American Physical Society, Syracuse, New York, Nov. 20-22, 1996.
  5. Barbat, T., Ashgriz, N., and Liu, C.S., “Nonlinear Bubble Interactions in Acoustic Pressure Fields,” Third Microgravity Fluid Physics Conference, Cleveland, Ohio, June 13-15, 1996.
  6. Barbat, T., and Ashgriz, N., “Dancing Bubbles and Drops,” 9th Annual Conference on Liquid Atomization and Spray Systems, San Francisco, CA, May 19th-22nd, 1996.

DROPLET COLLISION

  1. Ashgriz, N., and Poo, J.Y., “Coalescence and separation in binary collisions of liquid drops,” Journal of Fluid Mechanics, Vol. 221, pp. 183-204, 1990.
  2. Ashgriz, N., and Givi, P., “Coalescence Efficiencies of Fuel Droplets,” International Communication in Heat and Mass Transfer, Vol. 16, No. 1, pp. 11-20, 1989.
  3. Ashgriz, N., and Givi, P., “Binary Collision Dynamics of Fuel Droplets,” International Journal of Heat and Fluid Flow, Vol. 8, No. 3, pp. 205-210, 1987.
  4. Saroka, M., and Ashgriz, N., “Static Merging of Two Liquid Drops,” manuscript to be submitted to the Journal of Experiments in Fluids.
  5. Saroka, M., and Ashgriz, N., “Collision of Two Excited Liquid Drops,” manuscript to be submitted to the Physics of Fluids.

Proceedings:

  1. Saroka, M., and Ashgriz, N., “Stretching Separation in the Binary Collision of Liquid Drops,” ILASS America, Annual Conference on Liquid Atomization and Spray Systems, May 21 – 24, , Indianapolis, Indiana, 1999.
  2. Ashgriz, N., and Saroka, M., “Drop Collisions: Influence of Shape and Internal Circulation,” Annual Meeting of the Division of Fluid Dynamics of American Physical Society, San Francisco, CA, Nov. 23-25, 1997.
  3. Poo, J.Y., and Ashgriz, N., “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.
  4. Pascasio, W., and Ashgriz, N., “Collision of two droplet streams in burning and non-burning conditions,” AIAA north East regional conference, April 12-14, 1986.
  5. Ashgriz, N., “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.
  6. Ashgriz, N., and Poo, J. Y., “Collision Dynamics of Liquid Drops,” 41st Annual Meeting of the Division of Fluid Dynamics of American Physical Society, Buffalo, New York, Nov. 20-22, 1988.
  7. Ashgriz, N., and Givi, P., “Fuel Droplet Collision in Reactive Environments,” Twenty-Second Symposium (Int.) on Combustion, Poster Session, The Combustion Institute, Seattle, Washington, August 14-19, 1988.
  8. Ashgriz, N., and Givi, P., “Coalescence Collision of Fuel Droplets,” AIAA 25th Aerospace Sciences Meeting, Paper AIAA-87-0138, Reno, Nevada, January 12-15, 1987.

DROPLET DYNAMICS

  1. Mashayek F., and Ashgriz, N., “Nonlinear Oscillation of Liquid Drops With Internal Circulation,” Physics of Fluids, Vol. 10, Issue 5, pp. 1071-1082, May 1998.
  2. Poo, J. Y., and Ashgriz, N., “Variation of Drag Coefficient in an Interacting Drop Stream,” Journal of Experiments in Fluids, Vol. 11, pp. 1-8, 1991.

FREE SURFACE FLOW MODELING

  1. Mashayek, F., and Ashgriz, N., “A Spine-Flux Method for Simulating Free Surface Flows,” Journal of Computational Physics, Vol. 122, pp. 367-379, 1995.
  2. Mashayek, F., and Ashgriz, N., “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.
  3. Mashayek, F., and Ashgriz, N., “Advection of Axisymmetric Interfaces by Volume of Fluid Method,” Int. Journal of Numerical Methods in Fluids, Vol. 20, No. 10, pp. 1337-1361, 1995.
  4. Mashayek, F., and Ashgriz, N., “A Height-Flux Method For Simulating Free Surface Flows And Interfaces,” Int. Journal of Numerical Methods in Fluids, Vol. 17, pp. 1035-1054, 1993.
  5. Ashgriz, N., and Poo, J. Y. “FLAIR: Flux Line-segment Advection and Interface Reconstruction,” Journal of Computational Physics, Vol. 93, No. 2, pp. 449-46, 1991.
  6. Poo, J. Y., and Ashgriz, N., “Curvature Calculation in Interfaces,” Journal of Computational Physics, Vol. 84, No. 2, pp. 483-491, 1989.
  7. Barbat, T., and Ashgriz, N, “A Computational Lagrangian-Eulerian Advection Remap For Free Surface Flows”, manuscript to be submitted to the Journal of Computational Physics.

Proceedings:

  1. Ashgriz, N., and Barbat, T., “Advection of Interfaces in Unstructured Grids,” Annual Meeting of the Division of Fluid Dynamics of American Physical Society, Philadelphia, PA, Nov. 23-25, 1998.
  2. Mashayek, F., and Ashgriz, N., “A Hybrid Finite Element – Volume of Fluid Method for Simulating Liquid Atomization,” Proceedings of the 6th Annual Conference on Liquid Atomization and Spray Systems, Worcester, Massachusetts, pp. 225-229, May 17-19, 1993.

IMPINGING JETS

  1. Ashgriz, N., Talley, D., and Brocklehurst, B., “On the Mixing Mechanisms in a Pair of Impinging Jets,” accepted for publication in the AIAA Journal of Propulsion and Power.
  2. Ashgriz, N., Washburn, R., and Barbat, T., “Segregation of Drop Size and Velocity in Jet Impinging Splash-plate Atomizers,” International Journal of Heat and Fluid Flow, Vol. 17, No. 5, pp. 509-516, 1996.
  3. Vassallo, P., Ashgriz, N., and Boorady, F.A., “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.

Proceedings:

  1. Ashgriz, N., Talley, D., Brocklehurst, B., and Christensen, T., “On the Mixing Mechanisms in a Pair of Impinging Jets,” AIAA Joint Propulsion Conference, July 10-13, San Diego, CA, 1995.
  2. Washburn, R., and Ashgriz, N., “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.
  3. Washburn, R., Ashgriz, N., Tunis, A., and Boorady, F.A., “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.

LIQUID JETS

  1. Saroka, M., Guo, Y., and Ashgriz, N., “Nonlinear Instability of an Evaporating Capillary Jet,” accepted for publication in the AIAA Journal.
  2. Huynh, H., Ashgriz, N., and Mashayek, F., “Instability of a Liquid Jets Subject to Disturbances Composed of Two Wavenumbers,” Journal of Fluid Mechanics, Vol. 320, pp. 185-210, August 1996.
  3. Mashayek, F., and Ashgriz, N., “Non-linear Instability of Liquid Jets with Thermocapillarity,” Journal of Fluid Mechanics, Vol. 283, pp. 97-123, 1995.
  4. Ashgriz, N., and Mashayek, F., “Temporal Analysis of Capillary Jet Breakup,” Journal of Fluid Mechanics, Vol. 291, pp. 163-190, 1995.
  5. Vassallo, P., and Ashgriz, N., “Satellite Formation and Merging in Liquid Jet Breakup,” Proceedings of the Royal Society of London A, Vol. 433, pp. 269-286, 1991.
  6. Elgowainy, A., and Ashgriz, N., “The Rayleigh-Taylor Instability of Viscous Fluid Layers,” Physics of Fluids, Vol. 9, Issue 6, pp. 1635-1649, June 1997.
  7. Mollot, D.J., Ashgriz, N., and Tsamopoulos, J., “Nonlinear Dynamics of Capillary Bridges: Experiments,” Journal of Fluid Mechanics, Vol. 255, pp. 411-435, 1993.

Proceedings:

  1. Mashayek, F., and Ashgriz, N., “Thermocapillary Instability of Liquid Jets,” Proceedings of the 7th Annual Conference on Liquid Atomization and Spray Systems, May 31 – June 3, Bellevue, Washington, 1994.
  2. Huynh, H., Mashayek, F., and Ashgriz, N., “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.
  3. Poo, N., and Ashgriz, N., “Numerical Simulation of Breakup of a Liquid Jet,” 41st Annual Meeting of the Division of Fluid Dynamics of American Physical Society, Buffalo, New York, Nov. 20-22, 1988.
  4. Elgowainy, A., and Ashgriz, N., “Rayleigh-Taylor Instability of Fluid Layers,” Annual Meeting of the Division of Fluid Dynamics of American Physical Society, Vol. 38, No. 12, 1993, p. 2208, 1993.
  5. Mollot, D. J., Soumekh, M., and Ashgriz, N., “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.

SOLID PROPELLANT GRAIN DESIGN

  1. Farzad, H., Mashayek, F., and Ashgriz, N., “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.
  2. Mashayek, F., and Ashgriz, N., “Solid Propellant Grain Design By an Interface Reconstruction Scheme,” AIAA Journal of Spacecraft and Rockets, Vol. 31, No. 5, 1994.

Proceedings:

  1. Farzad, H., and Ashgriz, N., “Effects of Cracks on a Solid Fuel in the Rockets,” Proceedings of the Third Fluid Dynamics Conference, Sharif University of Technology, Jan. 9-11, Tehran, Iran, 1995.
  2. Ashgriz, N., Sadeghipour, M.S., and Farzad, H., “Numerical Simulation of the Solid Propellant Grain Design,” Proceedings of the 2nd Fluid Dynamics Conference, Isfahan, Iran, July 6-8, 1993.
  3. Mashayek, F., and Ashgriz, N., “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.

SPRAY CHARACTERIZATION

  1. Oberle, C., and Ashgriz, N., “Whole Field Spray Sizing By Tomographic Imaging, ” Journal of Atomization and Sprays, Vol. 6, pp. 45-73, 1995.
  2. Ashgriz, N., and Yao, S.C., “Development of a Controlled Spray Generator,” Review of Scientific Instruments, Vol. 58, No. 7, pp. 1291-1296, 1987.
  3. Hsu, C-F, and Ashgriz, N., “Drop Generation Using a Drop-on-Orifice Impaction Method,” manuscript to be submitted to the Physics of Fluids.

Proceedings:

  1. Ashgriz, N., and Oberle, C., “Spray Sizing by Tomographic Imaging,” Proceedings of the 6th Annual Conference on Liquid Atomization and Spray Systems, Worcester, Massachusetts, pp. 147-151, May 17-19, 1993.
  2. Ashgriz, N., and Yao, S.C., “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.
  3. Ashgriz, N., and Yao, S.C., “Impulsed Spray Generator for Heterogeneous combustion Experiments,” Chemical and Physical Processes in Combustion, The Combustion Institute, p. 61, Dec. 1982.
  4. Felske, J. D., Ashgriz, N., and Seet, J. P., “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.

SPRAY COMBUSTION

  1. Elgowainy, A., and Ashgriz, N., “Numerical Simulation of the Hydrodynamics of the Microexplosion in Liquid Drops,” manuscript submitted to Journal of Atomization and Sprays.
  2. Wehe, S., and Ashgriz, N., “Ignition Probability and Absolute Minimum Ignition Energy in Fuel Sprays,” Combustion Science and Technology, Vol. 86, pp. 45-65, 1992.
  3. Ashgriz, N., “Flame Impingement and Droplet Collisions,” Physics of Fluids A, Vol. 1, No. 9, pp. 1440-1446, 1989.
  4. Ashgriz, N., “On the Flame Propagation Rates in Fuel Sprays,” Journal of Non-Equilibrium Thermodynamics, Vol. 14, No. 2, pp. 199-204, 1989.
  5. Ashgriz, N., Chiang, C.H., and Aggarwal, S., “Flame Structure in Fuel Rich Mono-Dispersed Sprays,” International Communications in Heat and Mass Transfer, Vol. 15, pp. 765-772, 1988.
  6. Ashgriz, N., and Yao, S.C., “Combustion Studies in Fuel Rich Idealized Sprays,” Physico-Chemical Hydrodynamics, Vol. 8, No. 3, pp. 335-347, 1987.

Proceedings:

  1. Farshchi, M., Rahimian, M.H., and Ashgriz, N., Chemically Reacting Liquid Droplet Flow Field Calculation,” 8th International Symposium on Transport Phenomena in Combustion, July 17-20, Sanfrancisco, CA 1995.
  2. Elgowainy, A., and Ashgriz, N., “Numerical Simulation of the Hydrodynamics of Microexplosion in Two Dimensional Drops,” Combustion Fundamentals and Applications, Central States Section Technical Meeting, The combustion Institute, pp. 228-233, April, 1992.
  3. Mollot, D.J., and Ashgriz, N., “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.
  4. Stry, W., Felske, J.D., and Ashgriz, N., “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.
  5. Lee, J.C.Y., Felske, J.D., and Ashgriz, N., “Flame Propagation Across Alkane-in-Water Emulsions,” Combustion Fundamentals and Applications, Central States Section Technical Meeting, The combustion Institute, pp. 174-179, April, 1992.
  6. Ashgriz, N., and Felske, J.D., “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.
  7. Mani, N., and Ashgriz, N., “Optimum Design of an Internal Combustion Engine Based on Interactive Kinematic-Combustion Modeling,” Department of Mechanical and Aerospace Engineering, State University of New York, Report No. ICE-50009-89, September 1989.
  8. Ashgriz, N., and Yao, S.C., “Radiative Heating and Evaporation of Droplets in Cylindrical Combustion Chambers,” Fall Technical Meeting of the Combustion Institute, Eastern States Section, Pittsburgh, PA, Oct. 1981.
  9. Yao, S. C., and Ashgriz, N., “Effect of Thermal Radiation on the Droplet Pre-evaporation in Spray Combustion,” Chemical and Physical Processes in Combustion, The Combustion Institute, p. 41.1, Nov. 1980.
  10. Ashgriz, N., and Yao, S. C., “Mechanisms of the Flame Propagation in Sprays,” Chemical and Physical Processes in Combustion, The Combustion Institute, p. 70-1, Dec. 1984.
  11. Chiang, C.H. and Ashgriz, N., “Flame Propagation Through a one Dimensional Air/Fuel Spray Mixture with Interactive Vaporization Between Droplets,” ASME National Heat Transfer Conference, Pittsburgh, PA, 1987.
  12. Wehe, S.D., Ashgriz, N., and Chiang, C.H., “Effect of Droplet Interaction on the Flame Propagation Rate in Sprays,” Chemical and Physical Processes in Combustion, The Combustion Institute, Nov. 1987.
  13. Ashgriz, N., and Wehe, S. D., “Ignition and Flame Propagation in Dense Sprays,” AICHE Meeting, Washington D. C., 1988.