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Conference Papers

Keynote Lectures and Invited Papers
  • R. Kumar, “Flow Dynamics in Electrified Microchannels” Gordon Research Conference on Micro and Nanoscale Phase Change Heat Transfer, January 11-15, Galveston, TX, 2015.

  • R. Kumar and S. Basu, “Fuel Droplet Atomization and Vaporization Characteristics,” Keynote Lecture, Indo-US Foundation Biofuel Workshop, Bangalore, India, June 22-24, 2011.

  • S. Basu and R. Kumar, “Vaporization of Functional Microdroplets Containing Dissolved and Undissolved Particles,” Keynote Lecture, Indo-US Foundation Biofuel Workshop, Bangalore, India, June 22-24, 2011.

  • R. Kumar and D. Vazquez, “Heat Transfer Characteristics of Immersed Heaters in Nanofluid Pool Boiling,” Keynote Lecture, Paper #1397, 7th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Antalya, Turkey, July 19-21, 2010.

  • R. Kumar and D. Milanova, “Dispersion and Surface Characteristics of Nano-oxide and Nanotube Suspensions,” Keynote Lecture, Interdisciplinary Transport Phenomena, ITP-07-81, Bansko, Bulgaria, October 14-19, 2007.

  • D. Milanova, R. Kumar, “Colloidal Stability, Dispersion Characteristics, and Ionic Concentration of Nanofluids in Pool Boiling”, Invited Lecture, ICE Nanofluids: Fundamentals and Applications, September 16-20, Copper Mountain, Colorado, 2007.

  • X. Wu and R. Kumar, “Simulation of Heat Transfer Enhancement in Nanoparticle Suspensions,” Keynote Lecture and Invited Paper, Materials Science and Technology Conference, Pittsburgh, Sept 26-28, 2005.

  • X. Wu and R. Kumar, “Nonequilibrium MD Simulation of effective thermal conductivity of nanofluids,” Keynote Lecture and Invited Paper, Proc. Nanomaterials: Synthesis, Characterization and Application, Calcutta, India, pp. 182-191, Nov., 2004.
2020
  • Tianyi Li, Aravinda Kar, Ranganathan Kumar Uniform and Gaussian UV Light Intensity Distribution on Droplet for Selective Area Deposition of Particles, Paper No: FEDSM2020-20464, V002T03A033; Fluids Engineering Summer Meeting, Virtual Conference, July 13-15. 2020.https://doi.org/10.1115/FEDSM2020-20464
2019
  • Nooranidoost, R. Kumar, “Deformation and viability of an encapsulated cell through a microfluidic contraction,” Bulletin of the American Physical Society, Boston, Mar. 4-8, 2019.
  • Haghshenas, R. Kumar, “Curvature estimation modeling using machine learning for CLSVOF method: Comparison with conventional methods,” Proc. ASME-JSME-KSME Joint Fluids Engineering Conference, AJKFLUIDS2019-5415, July 28-August 1, San Francisco, CA, 2019.
  • Hanthanan Arachchilege, R. Kumar, “Two-phase flow simulation of high-pressure gas atomization: Effect of molten metal and atomizing gas properties on droplet size distribution,” Proc. ASME-JSME-KSME Joint Fluids Engineering Conference, AJKFLUIDS2019-5454, July 28-August 1, San Francisco, CA, 2019.
  • Li, A. Kar, R. Kumar, “Concentration distribution of photosensitive liquid in a droplet under UV light,”
2018
  • Castillo, R. Kumar, A. Kar, “Nanoparticle electrospray laser deposition for manufacturing of photoconductive switch,” International Microelectronics Assembly and Packaging Society IMAPS: Symposium on Advanced Manufacturing and Innovative Design for DOD Systems, Palm Bay, Feb 21, 2018.
  • Castillo, R. Kumar, A. Kar, “Laser electrospray printing of nanoparticles on flexible and rigid substrates,” Int. Congress on Applications of Laser & Electro-Optics (ICALEO), Orlando, Oct. 14-18, 2018.
2017
  • E. Castillo, R. Kumar, A. Kar, “Nanoparticle electrospray laser deposition for additive manufacturing of microlayers on flexible substrates,” International Microelectronics Assembly and Packaging Society IMAPS: Smart Sensors, Research, Manufacturing & IoT Applications. Orlando, Aug 24, 2017.
  • E. Castillo, R. Kumar, A. Kar, Laser Institute of America LIA. “Superlens focused laser electrospray micro processing of nanoparticles. 36th International Congress on Application of Lasers & Electro-Optics. Atlanta, Oct 26, 2017.
  • M. Nooranidoost, M. Haghshenas, M. Muradoglu R. Kumar, “Cell-encapsulating droplet formation in a flow-focusing configuration.” Bulletin of the American Physical Society 62 (2017), p. 426, ID: BAPS.2017.DFD.L14.3, Denver, CO.
  • J.A. Wilson and R. Kumar, “Investigation of numerical phase change mechanism for immiscible two-phase flows in porous media,” 2nd Int. Conf. on Interfacial Phenomena and Heat Transfer (IPHT2017), Keynote Lecture, Xian, China, July 7-10, 2017.
  • E. Castillo, A. Kar, R. Kumar Electrospray mode transition of microdroplets for high conductivity nanoparticle suspension,” 2nd Int. Conf. on Interfacial Phenomena and Heat Transfer (IPHT2017), Xian, China, July 7-10, 2017.
  • M. Haghshenas, R. Kumar, “Numerical Simulation of Laminar Oil Jet Injection in water crossflow,” 2nd Int. Conf. on Interfacial Phenomena and Heat Transfer (IPHT2017), Xian, China, July 7-10, 2017.
2015
  • P. K. Choudhury, A. Davanlou and R. Kumar, “Visualization and Interface Tracking of a Conical Liquid Sheet, Droplets 2015, University of Twente, Netherlands, Oct. 6-8, 2015.
  • A. Davanlou, E. Castillo and R. Kumar, “Droplet impact on liquid pools: effect of physicochemical properties and impact velocity, Droplets 2015, University of Twente, Netherlands, Oct. 6-8, 2015.
  • A. Davanlou and R. Kumar, “On the Lifetime of Non-coalescent Levitated Droplets, ASME InterPACK & ICNMM, Paper # 48826, San Francisco, CA, July 6-8, 2015.
2013
  • A. Sanyal, S. Basu and R. Kumar, “Dominant Oscillation Modes in a Radiatively Heated Acoustically Levitated Droplet,” 11th International ISHMT/ASME Heat and Mass Transfer Conference, HMTC 1300257, Dec 28-31, Kharagpur, India, 2013. [Received Best Paper award]
  • A. Miglani, S. Basu and R. Kumar, “Self Excited Oscillations in Burning Functional Pendant Droplets”, 11th International ISHMT/ASME Heat and Mass Transfer Conference, HMTC 1300257, Dec 28-31, Kharagpur, India, 2013.
  • P. Deepu, S. Basu, and R. Kumar, “Shape Oscillations of Droplets Suspended in an Air Jet at Intermediate Reynolds Numbers,” 11th International ISHMT/ASME Heat and Mass Transfer Conference, HMTC 1300257, Dec 28-31, Kharagpur, India, 2013.
  • A. Miglani, S. Basu and R. Kumar, “Shape deformation dynamics of acoustically pulsed functional pendant droplet undergoing burning,” 66th Annual Meeting of the APS Division of Fluid Dynamics, Pittsburgh, PA, November 24-26, 2013.
  • P. Deepu, R. Kumar and S. Basu, “Spreading and atomization dynamics of ultrasonically excited droplets,” 66th Annual Meeting of the APS Division of Fluid Dynamics, Pittsburgh, PA, November 24-26, 2013.
  • A. Davanlou, J. Lee, S. Basu, and R. Kumar, “The Effects of Surfactant on Simplex Nozzle Spray Behavior and Its Comparison to Liquid Fuels,” Proc. ASME-IMECE Paper # 65116, San Diego, CA, November 15-21, 2013.
  • A. Davanlou and R. Kumar, “Influence of Marangoni Flow on Droplet Migration in a Thin Film,” IMECE Photogallery Session, San Diego, CA, November 15-21, 2013.
  • A. Davanlou and R. Kumar, “Thermal Manipulation of Microdroplets on a Liquid Platfrom for Biomedical and Lab-on-a-Chip Applications,” IMECE Photogallery Session, San Diego, CA, November 15-21, 2013.
  • A. Davanlou, R. Shabani, H. J. Cho, and R. Kumar, “Is Thermocapillary Enough for Droplet Actuation?,” MicroTAS, Paper # 0906, Oct 27-31, Freiburg, Germany, 2013.
  • J. Lee, A. Davanlou, S. Basu, and R. Kumar, “Surface tension effects on atomization characteristics in hollow cone swirl spray,” 8th World Conferences on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics, Lisbon, Portugal, June 16-20, 2013.
  • A. Miglani, S. Basu, and R. Kumar, “Coupled dynamics of homogeneous boiling and volumetric shape deformation in burning functional pendant droplets,” 8th World Conferences on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics, Lisbon, Portugal, June 16-20, 2013.
  • P. Deepu, S. Basu, and R. Kumar, “Characteristics of surface ligaments on ultrasonically excited droplets,” 8th World Conferences on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics, Lisbon, Portugal, June 16-20, 2013.
  • A. Sanyal, S. Basu, P. Deepu, R. Kumar, “Orthogonal modes of thermally induced oscillations of an acoustically levitated droplet,” 8th World Conferences on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics, Lisbon, Portugal, June 16-20, 2013.
  • H.S. Matharoo, D. Makkar, A. Gupta, S. Hari, M. Ramadoss and R. Kumar, “Effect of Geometry on Droplet Formation in a Microfluidic Flow-Focusing Device,” 44th AIAA Thermophysics Conference, San Diego, CA, June 24-27, 2013, DOI: 10.2514/MTP13.
    R. Shabani, R. Kumar and H. J. Cho, “Modeling Stable Configurations of Aqueous Droplets Floating on Air-oil Interface”, 8th International Conference on Multiphase Flow (ICMF 2013), Jeju, Korea, May 26-31, 2013.
2012
  • A. Saha, S. Basu and R. Kumar, “Levitated Droplet Evaporation: Scaling Analysis for Equivalence between Radiative and Convective heating,” 9th Euromech Fluid Mechanics Conference, Rome, Italy, September 9-13, 2012.
  • B. Pathak, S. Basu and R. Kumar, “Agglomeration Dynamics of an Evaporating Acoustically Levitated Droplet,” 9th Euromech Fluid Mechanics Conference, Rome, Italy, September 9-13, 2012.
  • A. Saha, S. Basu and R. Kumar, “Thermally Induced Breakup of Levitated Droplet,” ICLASS 2012, 12th Triennial International Conference on Liquid Atomization and Spray Systems, Heidelberg, Germany, September 2-6, 2012.
  • J. Lee, A. Saha, S. Basu and R. Kumar, “Effects of Injection Pressure on Spray,” ICLASS 2012, 12th Triennial International Conference on Liquid Atomization and Spray Systems, Heidelberg, Germany, September 2-6, 2012.
  • X. Gu, S. Basu and R. Kumar, “Analysis of a Collision Model in a Co-Axial Liquid Fuel Spray in a Heated Air Chamber,” ICLASS 2012, 12th Triennial International Conference on Liquid Atomization and Spray Systems, Heidelberg, Germany, September 2-6, 2012.
  • P. Deepu, A. Saha, S. Basu and R. Kumar, “Shape Deformation and Atomization of Functional Droplets in Contact with a Vibrating Surface,” ICLASS 2012, 12th Triennial International Conference on Liquid Atomization and Spray Systems, Heidelberg, Germany, September 2-6, 2012.
  • X. Gu, S. Basu and R. Kumar, “Vaporization Performance Study of Liquid Fuel Sprays in a Crossflow pre-mixer,” Institute for Liquid Atomization and Spray Systems Conference, ILASS Americas, San Antonio, Texas, May 20-23, 2012.
  • S.M.S. Murshed and R. Kumar, Bubble nucleation dynamics of R-134a refrigerant in a pool boiling system, In Proceedings of International Workshop on Ionic Liquids- Seeds for New Engineering Applications, Lisbon, Portugal, February 2-3, pp. 31-33, 2012.
2011
  • P. Deepu, S. Basu, B. Pathak, R. Kumar, “Vaporization of Functional Pendant Droplets in Convective Environment,” Paper # ISHMT_IND_16_037, Proc. 10th ISHMT-ASME Heat and Mass Transfer Conference, Chennai, Dec 27-30, 2011.
  • A. Saha, S. Basu and R. Kumar, “Radiatively Heated Nano-Silica Droplet,” Paper #ISHMT_IND_02_042, Proc. 10th ISHMT-ASME Heat and Mass Transfer Conference, Chennai, Dec 27-30, 2011.
  • P. Deepu, S. Basu and R. Kumar, “Vaporization Dynamics of Functional Pendant Droplets in a Hot Laminar Air Jet,” Paper #2-011, Proc. 22nd National Conf. on IC Engines and Combustion, Calicut, Dec 10-13, 2011.
  • A. Saha, S. Basu and R. Kumar, “Agglomeration and Precipitation Kinetics on Acoustically Levitated Droplet Containing Solute Particles,” ILASS-Europe 24th European Conference on Liquid Atomization and Spray Systems, Estoril, Portugal, Sept 5-7, 2011.
  • E. Yakshi-Tafti, R. Kumar and H. Cho, “Thermally Actuated High Speed Droplet Manipulation Platform, Transducers ’11, Paper #08-049, Beijing, China, June 5-9, 2011.
  • X. Gu, S. Basu, R. Kumar, “Simulation of Liquid Fuel Dispersion and Vaporization in a Crossflow Pre-mixer”, Paper # 184, ILASS, 23rd Annual Conf. on Liquid Atomization and Spray Systems, Ventura, CA, May 15-18, 2011.
  • X. Gu, A. Saha, S. Basu, W. Deng and R. Kumar, “Study of Single Levitated Fuel Droplet Vaporization Process Under Monochromatic Irradiation Using IR-Thermography and High Speed Imaging,” Paper # 185, ILASS, 23rd Annual Conference on Liquid Atomization and Spray Systems, Ventura, CA May 15-18, 2011.
2010
  • A.Saha, E. Tijerino, R. Kumar and S.Basu, “Heat Transfer and Chemical Transformation of Levitated Droplets Containing Dissolved and Undissolved Impurities,” Eighth Asia-Pacific Conference on Combustion, Paper # SD1004, Hyderabad, December 10-13, 2010.
  • X. Gu, S. Basu and R. Kumar, “Numerical Simulation of Atomized Biofuel and Conventional Fuel Dispersion and Vaporization in a Crossflow Premixer,” Eighth Asia-Pacific Conference on Combustion, Paper # SD1001, Hyderabad, December 10-13, 2010.
  • N. Aminimanesh, S. Basu and R. Kumar, “Modeling of a Reacting Nanofilm on a Composite Substrate,” Eighth Asia-Pacific Conference on Combustion, Paper # SD1002, Hyderabad, December 10-13, 2010.
  • A.Saha, E. Tijerino, R. Kumar and S.Basu, “Radiative Heating of Acoustically Levitated Nanosilica Droplets: Internal Flow Pattern Leading to Ring or Bowl Shaped Structure,” 63rd Annual Meeting of the APS Division of Fluid Dynamics, Long Beach, California, Nov 21-23, 2010.
  • E. Yakshi-Tafti, H. Cho and R. Kumar, “Effect of drop shape on thermally-induced drop motion at the free interface of immiscible liquid layers,” 63rd Annual Meeting of the APS Division of Fluid Dynamics, Long Beach, California, Nov 21-23, 2010.
  • E. Tijerino, A. Saha, R. Kumar and S. Basu, “Acoustically Levitated Nanofluid Droplet Vaporization,” Proc. ASME 3rd Joint US-European Fluids Engineering Summer Meeting and 8th Int. Conf. on Nanochannels, Microchannels, and Minichannels, Paper #31172, Montreal, Canada, August 1-5, 2010.
  • A.Saha, E. Tijerino, R. Kumar and S.Basu, “IR-Thermography and High speed imaging of Cerium Nitrate Precursor Droplets Heated by Monochromatic Irradiation,” Paper #31168, Proc. ASME 3rd Joint US-European Fluids Engineering Summer Meeting and 8th Int. Conf. on Nanochannels, Microchannels, and Minichannels, Montreal, Canada, August 1-5, 2010.
  • A.Saha, E. Tijerino, R. Kumar and S.Basu, “IR-Thermography, Laser induced Fluorescence and High speed imaging of Cerium Nitrate Precursor Droplets Heated by Monochromatic Irradiation”, Paper #1732, 15th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lisbon, Portugal, July 3-5, 2010.
  • E. Yakshi-Tafti, H. Cho and R. Kumar, “Thermally Induced Motion of Drops at Interfaces: Shape Effect,” Gordon Research Conference, Waterville, Maine, June 20-25, 2010.
  • A.Saha, R Kumar, S Seal, S Basu, “Study of Vaporization and Precipitation Characteristics in Precursor Droplets Heated by Monochromatic Irradiation”, Workshop on application of Laser In Mechanical Industries (WALMI), Jadavpur University, Kolkata, India, January 7-9, 2010.
2009
  • S.M.S. Murshed, K. Vereen and R. Kumar, “Flow Boiling Experiments of R-134A Refrigerant in a Pressurized System,” IMECE Paper #12727, Lake Buena Vista, FL, November 13-19, 2009.
  • E.Yakshi-Tafti, R. Kumar and H.J. Cho, “Passive Enhancement of Diffusive Mixing by Laminar Profile Variation in Microchannels,” IMECE Paper #11618, Lake Buena Vista, FL, November 13-19, 2009.
  • A.Gupta and R. Kumar, “Stability of flows in a T-junction Microfluidic Device,” IMECE Paper #11278, Lake Buena Vista, FL, November 13-19, 2009.
  • A.Saha, R. Clapp, S.Basu, R. Kumar, “Modeling and Experimental Study of Pure and Blended Bio-Fuel Droplets Injected into Hot Stream of Air”, Proceedings of the Eastern States Section of the Combustion Institute 2009, University of Maryland College Park, Paper #A10, Oct 18-21 2009.
  • E.Yakshi-Tafti, H.J. Cho and R. Kumar, “Manipulation of Discrete Droplets on Liquid Platforms using Thermal Gradients,” Eurosensors XXIII, Lausanne, Switzerland, September 6-9, 2009.
  • S. Basu, D. Lambe, S. Szlendak and R. Kumar, “Non-Invasive Detection of Water Vapor and Carbon Dioxide Concentrations In Narrow Channels with Simultaneous Liquid Water,” Gordon Research Conference, Rhode Island, July 27-31, 2009.
  • S.M.S. Murshed, D. Milanova and R. Kumar, “An Experimental Study of Surface Tension Dependent Pool Boiling Characteristics of Carbon Nanotubes-Nanofluids,” Seventh Intl. ASME Conf. on Nanochannels, Microchannels and Minichannels, ICNMM2009-82204, Pohang, Korea, June 21-23, 2009.
  • A.Gupta, S.M.S. Murshed and R. Kumar, “Formation of Droplets in a T-Junction Microfluidic Device Using the Lattice Boltzmann Method,” Seventh Intl. ASME Conf. on Nanochannels, Microchannels and Minichannels, ICNMM2009-82158, Pohang, Korea, June 21-23, 2009.
  • D. E. Lambe, K. Seleski, R. Kumar, S. Basu, “Novel In-situ Laser Based Diagnostics For Measurement Of Water Vapor And Carbon-Dioxide In The Gas Distribution Channels Of A Fuel Cell,” Seventh Intl. ASME Conf. on Nanochannels, Microchannels and Minichannels, ICNMM2009-82001, Pohang, Korea, June 21-23, 2009.
  • S.M.S. Murshed, K. Vereen and R. Kumar, “Bubble Nucleation of R134A Refrigerant in a Pressurized Flow Boiling System,” 7th ECI International Conference on Boiling Heat Transfer, Florianopolis-SC, Brazil, May 3-7, 2009.
  • S.Basu, B. Dubas, A. Saha, R. Kumar, “Vaporization Characteristics of Pure and Blended Bio-Fuel Droplets Injected into Hot Stream of Air”, Paper #2313, 6th US National Meeting of the Combustion Institute in Ann Arbor, MI, May, 2009.
  • E. Yakshi-Tafti, R. Kumar and H.J. Cho, “Passive In-Plane Micromixer for Slow Diffusing Liquid,” Micro Total Analysis Systems, Transducers, Jeju, Korea, Nov 1-5, 2009.
  • A.Gupta, L. Chow, R. Kumar and A.J.C. Ladd, “Effect of Aspect Ratio on Inertial Migration of Neutrally Buoyant Spheres in a Rectangular Channel,” 47th AIAA Aerospace Sciences Meeting, Orlando, Jan 5-8, 2009.
  • E. Yakshi-Tafti, H.J. Cho and R. Kumar, “Study of Backward Facing Step Flow Problem in Microchannels Using Particle Image Velocimetry,” 47th AIAA Aerospace Sciences Meeting, Orlando, Jan 5-8, 2009.
  • L. Zea, R. Kumar, A.R. Diaz and C.K. Shepherd, “Surface Extra-Vehicular Activity Emergency Scenario Management: Tools, Procedures, and Geologically Related Implications,” 47th AIAA Aerospace Sciences Meeting, Orlando, Jan 5-8, 2009.
  • X. Gu, A. Gupta and R. Kumar, “Lattice Boltzmann Simulation of Drop Collision and Surface Impingement at High Density Ratio,” 47th AIAA Aerospace Sciences Meeting, Orlando, Jan 5-8, 2009.
Prior to 2009
  • A.Gupta and R. Kumar, “Simulation of Droplet Flows in Microchannels using Lattice Boltzmann Method,” Sixth International ASME Conference on Nanochannels, Microchannels and Minichannels, ICNMM2008-62372, June 23-25, Darmstadt, Germany, 2008.
  • L. Zea, P. Jepson and R. Kumar, “Role of Pressure and Reaction Time on Corrosion Control of H2S Scavenger,” SPE 114175-PP, Aberdeen, UK, June 2008.
  • E. Yakshi-Tafti, K. Law, R. Kumar and H.J. Cho, “Effect of Surfactants on Droplet Formation in Microchannels,” ASME Early Career Technical Conference, Oct 3-4, Miami, FL, 2008.
  • E. Yakshi-Tafti, O.J. Ardilla, H.J. Cho and R. Kumar, “ Experimental Analysis of Backward Facing Step Flow in Microchannels Using Micro Particle Image Velocimetry, ASME Heat Transfer Conference, Jacksonville, FL, August 10-14, 2008.
  • A. Gupta and R. Kumar, “Bubble Coalescence and Breakup Studies using a Three-Dimensional Lattice Boltzmann Method,” ASME Heat Transfer Conference, Jacksonville, FL, August 10-14, 2008.
  • D. Milanova and R. Kumar, “Functionalized Single Walled and Double Walled Carbon Nanotubes for Thermal Enhancement,” IMECE, Nov 11-15, Seattle, 2007.
  • A.Gupta and R. Kumar, “Lattice Boltzmann Simulation to Study Multiple Bubble Dynamics,” IMECE, Paper #43218, Nov 11-15, Seattle, 2007.
  • N. Amini, K. Coffey and R. Kumar, “Experimental and Numerical Study of Dense Layered Nano-Energetic Materials, IMECE, Paper #43670, Nov 11-15, Seattle, 2007.
  • D. Joo and R. Kumar, “Experiments in Nucleation Dynamics of High Pressure Refrigerant in Pool Boiling Using Thermo Liquid Crystals,” IMECE, Paper #43942, Nov 11-15, Seattle, 2007.
  • K. Talari and R. Kumar, “Liquid Crystal Thermography Studies in Water Pool Boiling at Subatmospheric Pressures,”5th Int. Conf. Nanochannels, Microchannels and Minichannels, Paper ICNMM2007-30193, June 18-20, Puebla, Mexico, 2007.
  • D. Milanova and R. Kumar, “Heat Transfer Enhancement in Single-walled and Double-walled Carbon Nanotube Suspensions,” NSTI Nanotech2007, Santa Clara, CA, May 20-24, 2007.
  • D. Milanova, R. Kumar, S. Kuchibhatla and S. Seal, “Heat Transfer Behavior of Oxide Nanoparticles in Pool Boiling Experiment,” Intl. Conf. on Nanochannels, Microchannels and Minichannels, ICNMM2006, Limerick, Ireland, June 19-21, 2006.
  • A.Gupta, X. Wu and R. Kumar, “Possible Mechanisms for Thermal Conductivity Enhancement in Nanofluids,” Intl. Conf. on Nanochannels, Microchannels and Minichannels, ICNMM2006, Limerick, Ireland, June 19-21, 2006.
  • D. Milanova, X. Wu and R. Kumar, “Effect of Surface Hydration and Interfusion of Suspended Silica Nanoparticles on Heat Transfer” NSTI Nanotechnology Conference, Boston, May 7-11,
  • E. Petersen and R. Kumar, “Aerospace Science and Research Experience for Teachers: The First Two Years,” AIAA 2006-0679, 44th AIAA Aerospace Science Meeting and Exhibit, January 9-12, 2006, Reno, NV
  • P. Sachdeva, J. Kapat, D. Srivastava, R. Kumar, M. Meyyappan, “Simulation of the Thermal Energy Transport between Carbon Nanotube and Hydrogen Gas Molecules: Effects of Nanotube Chirality and Diameter, Intl. Conf. Advanced Materials Design and Development, ICAMDD2005, Goa, India, Dec 14-16, 2005.
  • X. Wu, R. Kumar, P. Sachdeva, “Calculation of thermal conductivity in nanofluids from atomic-scale simulations,” ASME IMECE2005-80849, Orlando, Nov. 5-11, 2005.
  • A.Sleiti and R. Kumar, “Effect of Vent Aspect Ratio on Unsteady Laminar Buoyant Flow through Rectangular Vents in Large Enclosures,” ASME IMECE2005-81604, Orlando, Nov. 5-11, 2005.
  • J. Solomon, J. Kapat, R. Kumar, D. Srivastava, “Study of Thermal Energy Transport Between Hydrogen Gas Molecules and a Single-wall Carbon Nanotube Using Molecular Dynamics Simulations,” Proc. 2005 ASME Summer Heat Transfer Conference, San Francisco, July 17-22, 2005.
  • X. Wu and R. Kumar, “Investigation of Natural Convection in Nanofluids by Lattice Boltzmann Method,” Proc. 2005 ASME Summer Heat Transfer Conference, San Francisco, July 17-22, 2005.
  • X. Wu and R. Kumar, “Lattice Boltzmann model for Flow and Heat Transfer of Nanofluids in a Microchannel,” Proc. 3rd Intl. Conf. Microchannels and Minichannels, Paper ICMM2005-75223, Toronto, June 13-15, 2005.
  • R. Kumar and M. Gottmann, “Image Reconstruction of Annular Flow Waves using Multiple Probe Film Thickness Measurements,” 3rd Intl. Symp. Two-Phase Flow Modeling and Experimentation, Sept 22-25, 2004.
  • R. Kumar and T.A. Trabold, “Measurements in High Pressure Wall-Heated Annular Two-Phase Flow,” Proc. 5th World Conference in Experimental Fluid Mechanics, Heat Transfer and Thermodynamics, Thessaloniki, Greece, Sept 24-28, 2001.
  • T.A. Trabold and R. Kumar, “Vapor Core Turbulence in Two-Phase Annular Flow,” Proc. 2nd Annual Two-Phase Flow Symposium on Modeling and Experimentation, Pisa, Italy, Vol. 2, pp. 1131-1139, May, 1999.
  • M. Gottman, T. Oishi, K.R. Sridhar and R. Kumar, “Interfacial Shape and Wave Velocity Measurements in Annular Flow,” ASME IMECE, HTD-Vol. 361-5, pp. 353-369, Anaheim, November, 1998.
  • T.A. Trabold, R. Kumar and P.F. Vassallo, “Annular Flow Measurements in R134a: Void Fraction, Drop Velocity and Size,” ASME IMECE, HTD-Vol. 361-5, pp. 379-393, Anaheim, November, 1998.
  • F. White, et al., “Proc. ASME Fluids Engineering Division,” ASME HTD-Vol. 247, co-editor, ASME IMECE, FED-Vol. 247, Anaheim, November, 1998.
  • P.F. Vassallo and R. Kumar, “Particle Image Velocimetry Measurements in the Wake of an Obstruction in a Rectangular Duct,” ASME Fluids Engineering Conf., Vancouver, June 1997.
  • R. Kumar and D.P. Edwards, “Interfacial Shear Stress Model in Two-Phase Annular Flow,” ASME IMECE, HTD-Vol. 334, pp. 381-389, Atlanta, November, 1996.
  • P.F. Vassallo and R. Kumar, “Liquid and Gas Velocity Measurements Using LDV in Air-Water Duct Flow,” ASME IMECE, HTD-Vol. 321/FED-Vol. 233, San Francisco, November, 1995.
  • T.A. Conover, R. Kumar and J.S. Kapat, “Buoyant Pulsating Exchange Flow Through a Vent,” ASME Fluids Conf., Reno, June, 1994. R. Kumar, “Mixed Convection Heat Transfer,” ASME HTD-Vol. 247, co-Editor, National Heat Transfer Conf., Atlanta, August, 1993.
  • T.A. Conover and R. Kumar, “LDV Study of Buoyancy Exchange Flow Through a Vertical Tube,” Fifth Int. Conf. on Laser Anemometry, the Netherlands, August, 1993.
  • R. Kumar, T.A. Conover and Y. Pan, “Three-Dimensional Swirling Flow in a Cylinder: Particle Tracking Velocimetry Experiments and Computations,” ASME Fluids Engineering Conf., Fluid Measurement and Instrumentation Forum, Vol. 161, pp. 107-112, Washington, D.C., June 1993.
  • M. Singhal and R. Kumar, “Unsteady Laminar Buoyant Flow Through Rectangular Vents in Large Enclosures,” ASME Heat Transfer Conf., Vol. 247, pp. 21-32, Atlanta, August, 1993.
  • R. Kumar, “Measurement and Modeling of Environmental Flows,” ASME HTD-Vol. 232, co-Editor, Winter Annual Meeting, Anaheim, November, 1992.
  • S. Kannan and R. Kumar, “Image Enhancement and Segmentation Techniques for Drop Size Determination in Two-Phase Rotating Flows,” ASME/JSME Fluids Eng. Conf., Portland, June, 1991.
  • R. Kumar and T. Conover, “Flow Visualization Studies of a Swirling Flow in a Cylinder,” Second World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics, Dubrovnik, Yugoslavia, June, 1991.
  • S. Ramanathan and R. Kumar, “Correlations for Natural Convection Between Heated Vertical Plates,” ASME Winter Annual Meeting, Chicago, December, 1988.
  • R. Kumar and M. Keyhani, “Experimental and Numerical Investigation of Natural Convective Flow in a Horizontal Cylindrical Annulus,” ASME National Heat Transfer Conference, Vol. 2, pp. 115-124, Houston, July, 1988.
  • S. Ramanathan, R. Kumar and T. Wang, “Natural Convection Between Heated Plates Within Large Enclosures,” ASME National Heat Transfer Conf., Vol. 2, pp. 155-164, Houston, July, 1988.
  • J. Khan and R. Kumar, “Natural Convection in Vertical Annuli: A Numerical Study for Constant Heat Flux on the Inner Wall,” ASME National Heat Transfer Conf., Vol. 3, pp. 391-401, Houston, July, 1988.
  • R. Kumar and T.D. Yuan, “Recirculating Mixed Convection Flow in Rectangular Cavities,” AIAA Aerospace Sciences Meeting, Reno, January 1988.
  • U. Chakraborty and R. Kumar, “Variable Property Effects in a Horizontal Annulus with Internal Heat Generation,” ASME Winter Annual Meeting, Boston, Vol. 82, pp. 53-62, 1987.
  • M.A. Kalam and R. Kumar, “Numerical Study of Laminar Natural Convection in Vertical Annuli,” Fifth Int. Conf. on Numerical Methods in Thermal Problems, Montreal, Vol. 1, pp. 559-570, June, 1987.
  • R. Kumar, “Numerical Study of Natural Convection in a Horizontal Annulus with Constant Heat Flux on the Wall,” ASME/JSME Thermal Engineering Conf., Honolulu, Vol. 2, pp. 187-193, March, 1987.
  • G. Raghunath, R. Kumar and J.A. Liburdy, “Application of a k-e Closure to a Heated Turbulent Offset Jet,” Eighth Int. Heat Transfer Conf., San Francisco, Vol. 3, pp. 1153-1158, August, 1986.
  • D.N. Mahony, R. Kumar and E.H. Bishop, “Numerical Investigation of Variable Property Effects on Laminar natural Convection of Gases in Horizontal Cylindrical Annuli,” ASME National Heat Transfer Conf., Denver, August, 1985.
  • R. Kumar and R.J. Adrian, “Higher Order Moments in the Entrainment Zone of Unsteady Turbulent Penetrative Convection,” ASME National Heat Transfer Conf., Niagara Falls, August, 1984.
  • R. Kumar, “Turbulence Scales in the Entrainment Zone of an Interface,” Annual Meeting of the Society of Engineering Science, Blacksburg, VA, October, 1984.