Carney, C. S., C. J. Gump, C. M. Hrenya, and A. W. Weimer, “Rapid Nickel Oxalate Thermal Decomposition for Producing Fine Nickel Metal Powders. Part 2: Global Kinetics,” Materials Science and Engineering A, 431, 13-25 (2006).

Weber, M. W. and C. M. Hrenya, “Square-well Model for Cohesion in Fluidized Beds,” Chemical Engineering Science, 61, 4511-4527 (2006).

C. M. Hrenya and H. Scott Fogler, “Patten Centennial Scientific Workshop:  The Next Millennium in Chemical Engineering,” Chemical Engineering Education, 99-103 (Spring 2006).

J. K. Walsh, A. W. Weimer, and C. M. Hrenya, “Thermophoretic deposition of aerosol particles in laminar tube flow with mixed convection,” Journal of Aerosol Science, 37, 715-734 (2006).

Walsh, J. K., A. W. Weimer, and C. M. Hrenya, “An experimental study of thermophoretic deposition of aerosol particles in laminar tube flow with mixed convection,” Aerosol Science and Technology, 40, 178-188 (2006).

Weimer, A. W. and C. M. Hrenya, “Engineered Particle Processing,” Powder Technology, 156, 61 (2005).

S. R. Dahl and C. M. Hrenya, “Size segregation in gas-solid fluidized beds with continuous particle size distributions,” Chemical Engineering Science, 60, 6658-6673 (2005).


A. Stevens and C. M. Hrenya, “Comparison of soft-sphere models to measurements of collision properties during normal impacts,” Powder Technology, 154, 99-109 (2005).


H. Iddir, H. Arastoopour, and C. M. Hrenya, “Analysis of binary and ternary granular mixtures behavior using the kinetic theory approach,” Powder Technology, 151, 117-125 (2005).


J. E. Galvin, S. R. Dahl, and C. M. Hrenya, “On the role of non-equipartition in the dynamics of rapidly-flowing, granular mixtures,” Journal of Fluid Mechanics, 528, 207-232 (2005).


M. W. Weber, D. K. Hoffman, and C. M. Hrenya, “Discrete-particle simulations of cohesive granular flow using a square-well potential,” Granular Matter, 6, 249-254 (2004).


S. R. Dahl and C. M. Hrenya, “Size Segregation in Rapid, Granular Flows with Continuous Size Distributions,” Physics of Fluids, 16, 1-13 (2004).


S. R. Dahl, R. Clelland, and C. M. Hrenya, “Three-dimensional, Rapid Shear Flow of Particles with Continuous Size Distributions,” Powder Technology, 138, 7-12 (2003).

S. R. Dahl, C. M. Hrenya, V. Garzó, and J. W. Dufty, “Kinetic Temperatures for a Granular Mixture,” Physical Review E, 66, art. no. 041301 (2002).


S. R. Dahl, R. Clelland, and C. M. Hrenya, "The Effects of Continuous Size Distributions on the Rapid Flow of Inelastic Particles," Physics of Fluids, 14, 1972-1984 (2002).

R. Clelland and C. M. Hrenya, "Simulations of a Binary-sized Mixture of Inelastic Grains in Rapid Shear Flow," Physical Review E, 65, art. no. 031301 (2002).

J. A. Johnson, W. B. Krantz, C. M. Hrenya, and A. W. Weimer, “Sensitivity Analysis of the Rapid Carbothermal Reduction Synthesis of Ultra-Fine Silicon Carbide Powders,” Journal of Aerosol Science and Technology, 36, 1087-1098 (2002).

J. A. Johnson, C. M. Hrenya, and A. W. Weimer, “Intrinsic Reaction and Self-Diffusion Kinetics for Silicon Carbide Synthesis by Rapid Carbothermal Reduction,” Journal of the American Ceramic Society, 85, 2273-2280 (2002).

M. Alam and C. M. Hrenya, "Inelastic Collapse in Simple Shear Flow of a Granular Medium," Physical Review E, 63, art. no. 061308 (2001).

M. S. Detamore, M. A. Swanson, K. R. Frender, and C. M. Hrenya, “A Kinetic-Theory Analysis of the Scale-up of Circulating Fluidized Beds,” Powder Technology, 116, 190-203 (2001).

C. Hrenya, S. Miller, T. Mallo and J. Sinclair, "Comparison of Low Reynolds Number k-e Turbulence Models in Predicting Heat Transfer Rates for Pipe Flow," International Journal of Heat and Mass Transfer, 41, 1543-1547 (1998).

C. M. Hrenya and J. L. Sinclair, "The Role of Particle-Phase Turbulence in Gas-Solid Flows," AIChE J., 43, 853-869 (1997).

C. M. Hrenya, E. J. Bolio, D. Chakrabarti and J. L. Sinclair, "Comparison of Low Reynolds Number k-e Turbulence Models in Predicting Fully Developed Pipe Flow," Chemical Engineering Science, 50, 1923-1941 (1995).

Conference Proceedings (peer-reviewed)

J. E. Galvin, S. R. Dahl, and C. M. Hrenya, “The Effect of a Non-Equipartition of Energy on the Separation of Multi-Component Flows,” Materials Research Society Symposium Proceedings, 759, Boston, MA (Dec 2002).

S. R. Dahl, R. Clelland, and C. M. Hrenya, "Three-dimensional, Rapid Shear Flow of Particles with Continuous Size Distributions," Proceedings of the World Congress on Particle Technology 4, Sydney, Australia (Jul 2002), in press. 

M. W. Weber, C. M. Hrenya, and D. K. Hoffman, "Discrete-Particle Simulation of Cohesive, Inelastic Grains in Simple Shear Flow," Proceedings of the World Congress on Particle Technology 4, Sydney, Australia (Jul 2002), in press.


M. Alam, R. Clelland, and C. Hrenya “Effects of Polydispersity on Stresses in Granular Shear Flow,” Materials Research Society Symposium Proceedings, 627, San Francisco, CA (Apr 2000).

Conference Papers (non-refereed)

G.G. Joseph, J. Leboreiro, C. M. Hrenya, M. D. Lehr, H. R. Woods, S. S. Banerjee, and D. M. Snider, "Experimental verification of drag laws for binary, gas-fluidized systems", Proceedings of the Fifth World Congress on Particle Technology,  Orlando, FL (Apr 2006).

J. Leboreiro, G.G. Joseph, C. M. Hrenya, D.M. Dale, and S. S. Banerjee, "The Influence of Binary Drag Laws on MP-PIC Simulations of Segregation", Proceedings of the Fifth World Congress on Particle Technology,  Orlando, FL (Apr 2006).

M. W. Weber, D. K. Hoffman, and C. M. Hrenya, "Simulation of Cohesive Forces in Rapid Granular Flow Using A Square-Well Potential," Proceedings of the AIChE Annual Meeting: Particle Technology Forum, San Francisco, CA (Nov 2003).

S. R. Dahl and C. M. Hrenya, "Size Segregation of Particulate Mixtures with Lognormal Size Distributions," Proceedings of the AIChE Annual Meeting: Particle Technology Forum, San Francisco, CA (Nov 2003).

J. E. Galvin, S. R. Dahl, and C. M. Hrenya, "Analysis of Driving Forces for Segregation in a Granular Mixture," Proceedings of the AIChE Annual Meeting: Particle Technology Forum, San Francisco, CA (Nov 2003).

S. R. Dahl and C. M. Hrenya, "Size Segregation of Particulate Mixtures with Gaussian Size Distributions," Proceedings of the AIChE Annual Meeting: Particle Technology Forum, Indianapolis, IN (Nov 2002).

S. R. Dahl, R. Clelland, and C. M. Hrenya, "The Simple Shear Flow of Granular Materials with Lognormal Particle Size Distributions," Proceedings of the AIChE Annual Meeting: Particle Technology Forum, Reno, NV (Nov 2001).

M. Alam, R. Clelland, and C. Hrenya, "Simple Shear Flow of Granular Materials with a Smooth Size Distribution," Proceedings of the AIChE Annual Meeting: Fourth International Particle Technology Forum, Los Angeles, CA (Nov 2000).

J. Walsh, S. Dahl, A. Weimer, S. Pratsinis and C. Hrenya, "The Effects of Buoyancy on Thermophoretic Deposition of Aerosol Particles in a Laminar, Vertical Flow," Proceedings of the AIChE Annual Meeting: Fourth International Particle Technology Forum, Los Angeles, CA (Nov 2000).

M. Swanson, M. Detamore, and C. Hrenya “Effects of Particle Collisions on the Scaling of Fluidized Systems,” Proceedings of the Third Israeli Conference for Conveying and Handling of Particulate Solids, Dead Sea, Israel (May 2000).

M. Detamore, K. Frender, M. Swanson, and C. Hrenya "Scale-Up of High-Velocity Gas-Solid Systems: A Comparison between Kinetic-Theory Modeling and Existing Scaling Laws," Proceedings of the AIChE 1999 Annual Meeting: Fluidization and Fluid-Particle Systems, Dallas, TX (Nov 1999).

C. M. Hrenya and J. L. Sinclair, "Predicting Dense, Turbulent Gas-Particle Flows," Proceedings of the 10th ASCE Engineering Mechanics Specialty Conference, Boulder, CO (May 1995).

Conference Presentations

Galvin, J. E., C. M. Hrenya, and R. D. Wildman, “Knudsen Boundary Layer in Granular Systems,” Annual Meeting of the American Institute of Chemical Engineers, San Francisco, CA (Nov 2006).

Leboreiro, J., G. G. Joseph, and C. M. Hrenya, “Revisiting the Standard Drag Law for Bubbling, Gas-Fluidized Beds,” Annual Meeting of the American Institute of Chemical Engineers, San Francisco, CA (Nov 2006).

Joseph, G. G., J. Leboreiro, and C. M. Hrenya, and R. D. Wildman, “The Effect of Drag Laws on the Prediction of Fluidized Bed Bubbling,” Annual Meeting of the American Institute of Chemical Engineers, San Francisco, CA (Nov 2006).

Galvin, J. E., C. M. Hrenya, and R. D. Wildman, “Role of Knudsen Layer in Granular Systems (poster),” Gordon Research Conference on Granular and Granular-fluid Flows, Oxford, UK (Jul 2006).

Hrenya, C. “Cohesive Particulate Systems - Micro-scale to Macro-scale Analysis (poster),” 27th Annual Meeting of the International Fine Particulate Research Institute, Santa Barbara, CA (Jun 2006).

G.G. Joseph, J. Leboreiro, C. M. Hrenya, M. D. Lehr, H. R. Woods, S. S. Banerjee, and D. M. Snider, "Experimental verification of drag laws for binary, gas-fluidized systems," Fifth World Congress on Particle Technology,  Orlando, FL (Apr 2006).

J. Leboreiro, G.G. Joseph, C. M. Hrenya, D.M. Dale, and S. S. Banerjee, "The Influence of Binary Drag Laws on MP-PIC Simulations of Segregation", Fifth World Congress on Particle Technology,  Orlando, FL (Apr 2006).

R. B. Rice and C. M. Hrenya, "Impact of a Binary Size Distribution on the Clustering Instability," 58th Annual Meeting of American Physical Society Division of Fluid Dynamics, Chicago, IL (Nov 2005).

A. A. Kantak, R. H. Davis, and C. M. Hrenya, "Modeling of Wet Particle Collisions and its Application to Dilute Wet Particle Systems", Annual Meeting of the American Institute of Chemical Engineers, Cincinnati, OH (Nov 2005).

J. E. Galvin, S. R. Dahl & C. M. Hrenya, "Segregation Driving Forces in Granular Mixtures," 57th Annual Meeting of the APS DFD, Seattle, WA (Nov 2004).

S. R. Dahl and C. M. Hrenya, "Size Segregation in Gas-Solid Fluidized Beds with Continuous Size Distributions," Annual Meeting of the American Institute of Chemical Engineers, Austin, TX (Nov 2004).

J. K. Walsh, A. W. Weimer, and C. M. Hrenya, "Thermophoretic Deposition Patterns of Aerosol Particle in Tube Flow with Mixed Convection," Annual Meeting of the American Institute of Chemical Engineers, Austin, TX (Nov 2004).

M. W. Weber and C. M. Hrenya, "Simulation of Cohesive Forces in Fluidized Bed," Annual Meeting of the American Institute of Chemical Engineers, Austin, TX (Nov 2004).

J. E. Galvin, S. R. Dahl, and C. M. Hrenya, “Species Segregation Driven by a Granular Temperature Gradient,” 21^st International Congress of the International Union of Theoretical and Applied Mechanics, Warsaw , Poland (Aug 2004).

J. E. Galvin, S. R. Dahl & C. M. Hrenya, “Species Segregation of a Granular Mixture (poster),” Gordon Research Conference: Granular and Granular-Fluid Flow, Waterville, ME (June 2004).

S. R. Dahl and C. M. Hrenya, "Mixing Characteristics of Continuous Size Distributions in Presence of Granular Temperature Gradient," 56th Annual Meeting of American Physical Society Division of Fluid Dynamics, East Rutherford, NJ (Nov 2003).

M. W. Weber, D. K. Hoffman, and C. M. Hrenya, "Simulation of Cohesive Forces in Rapid Granular Flow Using A Square-Well Potential," Annual Meeting of the American Institute of Chemical Engineers, San Francisco, CA (Nov 2003).

C. M. Hrenya, “The Effect of a Non-Equipartition of Energy on the Separation of Multicomponent Flows,” Materials Research Society Fall Meeting, Boston, MA (Dec 2002)

S. R. Dahl and C. M. Hrenya, “Size Segregation of Particulate Mixtures with Gaussian Size Distributions,” Annual Meeting of the American Institute of Chemical Engineers, Indianapolis, IN (Nov 2002). 

J. E. Galvin, S. R. Dahl and C. M. Hrenya, “On the Common Assumptions in the Kinetic Theory of Granular Mixtures,” Annual Meeting of the American Institute of Chemical Engineers, Indianapolis, IN (Nov 2002). 

J. K. Walsh, K. Buechler, A. Weimer, S. E. Pratsinis, and C. M. Hrenya, “The Effect of Buoyancy on Thermophoretic Deposition Patterns of Aerosol Particles in Laminar, Vertical Tube Flow,” Annual Meeting of the American Institute of Chemical Engineers, Indianapolis, IN (Nov 2002). 

R. B. Rice and C. M. Hrenya, “A Characterization Method for Clusters in Multi-sized Particulate Systems (poster),” Annual Meeting of the American Institute of Chemical Engineers, Indianapolis, IN (Nov 2002).

S. R. Dahl, R. Clelland, and C. M. Hrenya, “Three-dimensional, Rapid Shear Flow of Particles with Continuous Size Distributions,” World Congress on Particle Technology 4, Sydney, Australia (Jul 2002). 

M. W. Weber, C. M. Hrenya, and D. K. Hoffman, “Discrete-Particle Simulation of Cohesive, Inelastic Grains in Simple Shear Flow,” World Congress on Particle Technology 4, Sydney, Australia (Jul 2002).

C. M. Hrenya, “Modeling Assumptions in Rapid Flows of Binary-Sized Mixtures (poster),” Gordon Research Conference on Granular and Granular-Fluid Flow, Plymouth, NH (Jul 2002).

S. R. Dahl, R. Clelland, and C. M. Hrenya, "The Simple Shear Flow of Granular Materials with Lognormal Particle Size Distributions," Annual Meeting of the American Institute for Chemical Engineers, Reno, NV (Nov 2001).

M. Alam, R. Clelland, and C. Hrenya, "Simple Shear Flow of Granular Materials with a Smooth Size Distribution," Annual Meeting of the American Institute of Chemical Engineers, Los Angeles, CA (Nov 2000).

J. Walsh, S. Dahl, A. Weimer, S. Pratsinis and C. Hrenya, "The Effects of Buoyancy on Thermophoretic Deposition of Aerosol Particles in a Laminar, Vertical Flow," Annual Meeting of the American Institute of Chemical Engineers, Los Angeles, CA (Nov 2000).

M. Alam, C. M. Hrenya, and R. Clelland, "Observations of Inelastic Collapse in Granular Shear Flow," International Congress of Theoretical and Applied Mechanics (ICTAM), Chicago, IL (Aug 2000).

S. Dahl, M. Alam, R. Clelland, and C. Hrenya, “Polydisperse Granular Shear Flows:   A Comparison between Discrete-Element Simulation and Theory,” United Engineering Foundation Conference on Chemical Reaction Engineering VII: Computational Fluid Dynamics”, Quebec City, Canada, (Aug 2000).

R. B. Clelland, C. M. Hrenya, and M. Alam, “Polydisperse Effect on Clustering in Granular Systems,” Third SIAM Conference on Mathematical Aspects of Materials Science, Philadelphia, PA (May 2000).

M. Swanson, M. Detamore, and C. Hrenya “Effects of Particle Collisions on the Scaling of Fluidized Systems,” Third Israeli Conference for Conveying and Handling of Particulate Solids, Dead Sea, Israel (May 2000).

M. Alam, R. Clelland, and C. Hrenya “Effects of Polydispersity on Stresses in Granular Shear Flow,” Materials Research Society Spring Meeting, San Francisco, CA (Apr 2000).

M. Detamore, K. Frender, M. Swanson, and C. Hrenya "Scale-Up of High-Velocity Gas-Solid Systems: A Comparison between Kinetic-Theory Modeling and Existing Scaling Laws," Annual Meeting of the American Institute of Chemical Engineers, Dallas, TX (Nov 1999).

A. Weimer, J. Johnson, and C. Hrenya, “Modeling and Simulation of the Rapid Carbothermal Reduction Synthesis of Ultra-Fine Silicon Carbide Powders,” Annual Meeting of the American Institute of Chemical Engineers, Dallas, TX (Nov 1999).

M. W. Braun, D. E. Rivera, A. Stenman, W. Foslien, and C. M. Hrenya, "Multi-level pseudo-random signal design and 'model-on-demand' estimation applied to nonlinear identification of a RTP wafer reactor," American Control Conference, San Diego, CA (Jun 1999).

C. M. Hrenya and J. L. Sinclair, "Describing the Hydrodynamic Behavior of Dense Gas-Solid Suspensions in Vertical Tubes," Twelfth Arizona Fluid Mechanics Conference, Tempe, AZ (Mar 1996).

C. M. Hrenya and J. L. Sinclair, "The Role of Particle-Phase Turbulence in Dense Gas-Solid Flows," Annual Meeting of the American Institute of Chemical Engineers, Miami, FL (Nov 1995).

C. M. Hrenya and J. L. Sinclair, "Predicting Dense, Turbulent Gas-Particle Flows," 10th ASCE Engineering Mechanics Specialty Conference, Boulder, CO (May 1995).

C. M. Hrenya and J. Sinclair, "Predicting the Turbulent Pneumatic Transport of Massive Solids," Annual Meeting of the American Institute of Chemical Engineers, San Francisco, CA (Nov 1994).

C. M. Hrenya, E. Bolio, D. Chakrabarti and J. Sinclair, "Comparative Study of Low Reynolds Number Turbulence Models in Predicting Turbulent Pipe Flow," Annual Meeting of the American Institute of Chemical Engineers, St. Louis, MO (Nov 1993).