Refereed Journal Publications (Last 5 years)
- Morris, A. B., Goldstein, D. B., Varghese, P. L., and Trafton, L. M., “Lunar Dust Transport Resulting from Single- and Four-Engine Plume Impingement,” AIAA Journal 54, 2016, pp. 1339-1349. DOI: 10.2514/1.J054532.
- Voelkel, S., Raman, V., and Varghese, P. L., “Effect of thermal nonequilibrium on reactions in hydrogen combustion,” Shock Waves 26, 2016, pp. 539-549, DOI 10.1007/s00193-016-0645-0.
- Berg, J. J., Goldstein, D. B., Varghese, P. L., and Trafton, L. M., “DSMC simulation of Europa water vapor plumes,” Icarus 277, 2016, pp. 370-380. DOI: 10.1016/j.icarus.2016.05.030.
- Yeoh, S. K., Li, Z., Goldstein, D. B., Varghese, P. L., Levin, D. A., and Trafton, L. M., “Constraining the Enceladus Plume using Numerical Simulation and Cassini Data,” Icarus 281, 2017, pp. 357-378. DOI: 10.1016/j.icarus.2016.08.028
- Hoey, W. A., Yeoh, S. K., Trafton, L. M., Goldstein, D. B., and Varghese, P. L., “Rarefied Gas Dynamic Simulation of Transfer and Escape in the Pluto-Charon System,” Icarus 287, 2017, pp. 87-102. DOI: 10.1016/j.icarus.2016.12.010
- McDoniel, W. J., Goldstein, D. B., Varghese, P. L., and Trafton, L. M., “The Interaction of Io’s Plumes and Sublimation Atmosphere,” Icarus 294, 2017, pp. 81-97. DOI:10.1016/j.icarus.2017.04.021.
- Voelkel, S., Varghese, P. L., and Raman, V., “Multitemperature Dissociation Rate of N2 + N2 → N2 + N + N Calculated Using Selective Sampling Quasi-Classical Trajectory Analysis,” J. Thermophysics and Heat Transfer 31, 2017, pp. 965-975. DOI: 10.2514/1.T5103.
- Higdon, K. J., Goldstein, D. B., and Varghese, P. L., “Sensitivity Analysis of Direct Simulation Monte Carlo Parameters for Ionizing Hypersonic Flows,” J. Thermophysics and Heat Transfer DOI: 10.2514/1.T5094.
- Prem, P., Goldstein, D. B., Varghese, P. L. and Trafton, L. M. “The Influence of Surface Roughness on Volatile Transport on the Moon,” Icarus 299, 2018, pp. 31-45. DOI: 10.1016/j.icarus.2017.07.010
- Clarke, P., Varghese, P., and Goldstein, D., “A low noise discrete velocity method for the Boltzmann equation with quantized rotational and vibrational energy,” J. Computational Physics 352, 2018, pp. 326-340. DOI: 10.1016/j.jcp.2017.08.065
- Sekaran, A., Varghese, P., and Goldstein, D., “An analysis of numerical convergence in discrete velocity gas dynamics for internal flows,” J. Computational Physics 365, 2018, pp. 226-242. DOI:10.1016/j.jcp.2018.03.023
- Higdon, K. J., Goldstein, D. B., and Varghese, P. L., “Sensitivity Analysis of DSMC Parameters for Ionizing Hypersonic Flows,” J. Thermophysics and Heat Transfer 32, 2018, pp. 90-102, 2017 DOI: 10.2514/1.T5094.
- Higdon, K. J., Cruden, B. A., Brandis, A. M., Liechty, D. S., Goldstein, D. B., and Varghese, P. L., “DSMC Shock Simulation of Saturn Entry Probe Conditions,” J. Thermophysics and Heat Transfer 32, 2018, 680-690. DOI: 10.2514/1.T5275.
- Reising, H. H, KC, U., Clemens, N.T., and Varghese, P. L., “Measurement of mixing-induced thermal non-equilibrium in a supersonic shear layer using spontaneous Raman scattering,” Physics of Fluids 29, 07601 (2017).
- Higdon, K. J., Goldstein, D. B., and Varghese, P. L., “Sensitivity Analysis of Direct Simulation Monte Carlo Parameters for Ionizing Hypersonic Flows.” J. Thermophysics and Heat Transfer 32, 2018, pp. 90-102, DOI: 10.2514/1.T5094.
- Prem, P., Goldstein, D. B., Varghese, P. L. and Trafton, L. M. “The Influence of Surface Roughness on Volatile Transport on the Moon.” Icarus 299, 2018, pp. 31-45. doi: 10.1016/j.icarus.2017.07.010.
- Clarke, P., Varghese, P., and Goldstein, D., “A low noise discrete velocity method for the Boltzmann equation with quantized rotational and vibrational energy.” J. Computational Physics 352, 2018, pp. 326-340. doi: 10.1016/j.jcp.2017.08.065
- Sekaran, A., Varghese, P., and Goldstein, D., “An analysis of numerical convergence in discrete velocity gas dynamics for internal flows.” J. Computational Physics 365, 2018, pp. 226-242. doi: 10.1016/j.jcp.2018.03.023
- Higdon, K. J., Goldstein, D. B., and Varghese, P. L., “Sensitivity Analysis of DSMC Parameters for Ionizing Hypersonic Flows.” J. Thermophysics and Heat Transfer 32, 2018, pp. 90-102, 2017 doi: 10.2514/1.T5094.
- Higdon, K. J., Cruden, B. A., Brandis, A. M., Liechty, D. S., Goldstein, D. B., and Varghese, P. L., “DSMC Shock Simulation of Saturn Entry Probe Conditions.” J. Thermophysics and Heat Transfer 32, 2018, 680-690. doi: 10.2514/1.T5275.
- Prem, P., Goldstein, D. B., Varghese, P. L., and Trafton, L. M., “Coupled DSMC-Monte Carlo Radiative Transfer Modeling of Gas Dynamics in a Transient Impact-Generated Lunar Atmosphere.” Icarus 326, 2019, pp. 88-104. doi: 10.1016/j.icarus.2019.02.036.
- McDoniel, W. J., Goldstein, D. B., Varghese, P. L., and Trafton, L. M. “Simulation of Io’s plumes and Jupiter’s plasma torus.” Physics of Fluids 31, 2019, 077103. doi: 10.1063/1.5097961.
- Mahieux, A., Goldstein, D., Varghese, P., Trafton, L., “Parametric study of water vapor and water ice particle plumes based on DSMC calculations: Application to the Enceladus geyser.” Icarus 319, 2019, pp. 729-744. doi:10.1016/j.icarus.2018.10.022.
- Prem, P., Hurley, D. M., Goldstein, D. B., and Varghese, P. L., “The Evolution of a Spacecraft-Generated Lunar Exosphere.” Journal of Geophysical Research: Planets 125, e2020JE006464, doi: 10.1029/2020JE006464.
- Poondla, Y., Tovar, S., Agrawal, A., Mahieux, A., Heldmann, J., Colaprete, A., Goldstein, D., Trafton, L., and Varghese, P., “Characterizing the hydroxyl observation of the LCROSS UV-visible spectrometer: Modeling of the impact plume.” Icarus 343, 2020, 113626. doi:10.1016/j.icarus.2020.113626.
- Oblapenko, G., Goldstein, D., Varghese, P., Moore, C., “A velocity space hybridization-based Boltzmann equation solver.” J. Computational Physics 408, 2020, 109302, doi: 10.1016/j.jcp.2020.109302.
- Haller, T. W. and Varghese, P. L., “Measurements of pressure broadening of N2 in the anisotropic tensor component of spontaneous Raman spectra,” Combustion and Flame, 2020.
- Ackley, P., Hoey, W., Goldstein, D., Trafton, L., and Varghese, P., “Hybrid Dust-Tracking Method for Modeling Ionian Volcanic Plume Observations.” Icarus 359, 2021,114274. doi: 10.1016/j.icarus.2020.114271.
- Hoey, W., Trafton, L., Ackley, P., Goldstein, D., Varghese, P., “Variations in the canopy shock structures of massive extraterrestrial plumes: Parametric DSMC simulation of the 2007 Tvashtar observations.” Icarus 363, 2021,114431. doi: 10.1016/j.icarus.2021.114431.
- Winters, C., Haller, T. Kearney, S., Varghese, P. Lynch, K., Daniel, K., and Wagner, J., “Pulse-Burst Spontaneous Raman Thermometry of Unsteady Wave Phenomena in a Shock Tube,” Optics Letters 462021, pp. 2160-2163. doi: 10.1364/OL.420484.
- Oblapenko, G., Goldstein, D., Varghese, P. and Moore, C., “Velocity-space Hybridization of DSMC and a Quasi-Particle Boltzmann Solver,” J. Thermophysics and Heat Transfer DOI:10.2514/1.T6074.
Refereed Conference Proceedings (Last 5 years)
- Fiévet, R., Voelkel, S., Koo, H., Raman, V. and Varghese, P. L., “Effect of Thermal Nonequilibrium on Ignition in Scramjet Combustors,” Proceedings of the Combustion Institute 36, 2, pp. 2901-2910 (2017).
- Higdon, K. J., Goldstein, D. B., and Varghese, P. L., “Sensitivity Analysis of DSMC Parameters for an 11-Species Air Hypersonic Flow”, 30th International Symposium on Rarefied Gas Dynamics, 2016, AIP Conf. Proc. 1786, 050013 (2016), doi: 10.1063/1.4967563.
- Varghese, P., Sekaran, A., Estes, S., and Goldstein, D., “Lid-Driven Cavity Flow Using a Discrete Velocity Method for Solving the Boltzmann Equation,” 30th International Symposium on Rarefied Gas Dynamics, 2016, AIP Conf. Proc. 1786, 040011 (2016), doi: 10.1063/1.4967549.
- Voelkel, S., Varghese, P. L., and Raman, V., “Analysis of Steady Hydrogen-Air Detonation Waves with Vibrational Nonequilibrium,” 30th International Symposium on Rarefied Gas Dynamics, 2016, AIP Conf. Proc. 1786, 070015 (2016), doi: 10.1063/1.4967591.
- Hoey, W.A., Ackley, P.C., Trafton, L.M., Goldstein, D.B., and Varghese, P.L., “DSMC Simulation of Io’s Unsteady Tvashtar Plume,” 30th International Symposium on Rarefied Gas Dynamics, 2016, AIP Conf. Proc. 1786, 160006 (2016), doi: 10.1063/1.4967663.
- Higdon, K., Goldstein, D., Varghese, P., “DSMC simulation of a radiating hypersonic flow.” 31st International Symposium on Rarefied Gas Dynamics, 2018, AIP Conf. Proc. 2132, 070014 (2019), doi: 10.1063/1.5119568.
- Poondla, Y., Varghese, P. Goldstein, D., and Higdon, K., “Modeling of chemical reactions using quasiparticle simulation (QuiPS).” 31st International Symposium on Rarefied Gas Dynamics, 2018, AIP Conf. Proc. 2132, 140002 (2019), doi: 10.1063/1.5119636.
Non-Refereed Conference Proceedings (Last 5 years)
- Voelkel, S., Varghese, P., and Raman,, “Quasi-State-Specific QCT Method for Calculating the Dissociation Rate of Nitrogen in Thermal Non-Equilibrium.” Paper 2016-0449, 54th AIAA Aerospace Sciences Meeting, AIAA Scitech, San Diego, January 2016. doi: 10.2514/6.2016-0449.
- Higdon, K. J., Cruden B. A., Brandis A. M., Liechty D. S., Goldstein D. B., and Varghese P. L., “DSMC Shock Simulation of Saturn Entry Probe Conditions.” Paper 2016-3840, 46th AIAA Thermophysics Conference, AIAA Aviation, Washington, DC, 2016. doi: 10.2514/6.2016-3840
- Reising, H. H., Haller, T. W., Clemens, N. T., Varghese, P. L., Fiévet, R., and Raman, V., “Spontaneous Raman Scattering Temperature Measurements and Large Eddy Simulations of Vibrational Non-equilibrium in High-Speed Jet Flames.” Paper 2016-3550, 32nd AIAA Aerodynamic Measurement Technology and Ground Testing Conference, AIAA Aviation Forum, Washington, DC, 2016. doi: 10.2514/6.2016-3550
- Greene, B. R., Clemens, N. T., Varghese, P. L., Bouslog, S., and Del Papa, S. V., “Characterization of a 50kW Inductively Coupled Plasma Torch for Testing of Ablative Thermal Protection Materials”, Paper 2017-0394, 55th AIAA Aerospace Sciences Meeting, Grapevine, TX, 2017. doi: 10.2514/6.2017-0394.
- Haller, T. W., Reising, H. H., Clemens, N. T., Varghese, P. L., “High-Pressure Spontaneous Raman Scattering Based Temperature Measurements”, Paper 2017-3898, 33rd AIAA Aerodynamic Measurement Technology and Ground Testing Conference, AIAA Aviation Forum, Denver, CO, 2017. doi: 10.2514/6.2017-3898.
- Fiévet, R., Voelkel, S., Raman, V., and Varghese, P. “Numerical investigation of vibrational relaxation coupling with turbulent mixing.” Paper 2017-0663, 55th AIAA Aerospace Sciences Meeting, AIAA SciTech, Grapevine, TX, January 2017. doi: 10.2514/6.2017-0663
- Pachuilo, M., Levko, D., Raja, L. L., and Varghese, P. L., “Experimental and Numerical Investigations of a Pulsed Nanosecond Streamer Discharge in CO2”, Paper 2017-1968, 55th AIAA Aerospace Sciences Meeting, AIAA SciTech Forum, Grapevine, TX, January 2017. doi: 10.2514/6.2017-1968
- Sekaran, A., Varghese, P., and Goldstein, D., “An analysis of numerical convergence in discrete velocity gas dynamics for internal flows.” Paper No. 2017-4026, AIAA Aviation Forum, Denver, CO, June 2017. doi: 10.2514/6.2017-4026.
- Oblapenko, G., Goldstein, D., Varghese, P. and Moore, C., “Velocity-space Hybridization of DSMC and a Boltzmann Solver.” Paper No. 2020-1063, AIAA SciTech Forum, Orlando, FL, January 2020. doi: 10.2514/6.2020-1063.
- Winters, C., Kearney, S., Wagner, J., Haller, T., and Varghese, P., “Burst-Mode Spontaneous Raman Thermometry in a Flat Flame,” Paper 2020-0518, AIAA SciTech Forum, Orlando, FL, January 2020. doi: 10.2514/6.2020-0518
- Oblapenko, G., Goldstein, D., Varghese, P. and Moore, C., “Modeling of Ionized Gas Flows with a Velocity-space Hybrid Boltzmann Solver,” Paper 2021-0705, AIAA SciTech Forum, January 2021. doi: 10.2514/6.2021-0705.