Dr. Pathikonda’s research interests revolve around studying complex problems in turbulent fluid flow phenomena related to aerospace, energy, chemical engineering, maritime and atmospheric sciences. His core expertise involves the use of advanced optical diagnostics to study wall-bounded flows, shear-driven turbulent mixing, active mixing, reacting flows, etc. He designs laboratory experiments to identify and measure fundamental turbulence behavior via application of laser-based (particle image velocimetry, laser-induced fluorescence, etc.) and optical spectroscopic techniques. The research goals typically aim to gain better understanding of the complex physics and enhance the predictive capabilities to resolve engineering and natural phenomena.
Dr. Pathikonda received his PhD in Theoretical and Applied Mechanics in 2017, and Masters in Aerospace Engineering in 2013 from University of Illinois, Urbana-Champaign. Prior to joining ASU, he has worked at Georgia Institute of Technology on problems such as variable-density and variable-viscosity mixing and shock- and blast-wave driven instabilities. He has also worked at Indian Institute of Science and Jawaharlal Nehru Center for Advanced Scientific Research at Bangalore as a Research Fellow. He is a recipient of the Stanley Weiss Outstanding Dissertation Award (2017), RISE Fellowship (2012), and Merit Scholarship for Academic Excellence (2006).
“Simultaneous velocity and density measurements of fully developed Rayleigh-Taylor turbulent mixing”, M. Mikhaeil, P. Suchandra, G. Pathikonda, D. Ranjan (accepted, Physical Review Fluids, 2021)
“Using optical diagnostics to study non-equilibrium condensation in a highly unsteady environment”, C. H. Lim, G. Pathikonda, S. Johnston, D. Ranjan, Experimental Thermal and Fluid Science, vol. 127, 2021
“Numerical analyses of high temperature dense, granular flows coupled to high temperature flow property measurements for solar thermal energy storage”, J. D. Yarrington, M. V. Bagepalli, G. Pathikonda, A. J. Schrader, Z. M. Zhang, D. Ranjan, P. G. Loutzenhiser, Solar Energy, vol. 213, 2021
“Mixing behavior in a conﬁned jet with disparate viscosity and implications for complex reactions”, G. Pathikonda, M. Usta, M. C. Ahmad, I. Khan, P. Gillis, S. Dhodapkar, P. Jain, D. Ranjan and C. K. Aidun, Chemical Engineering Journal, vol. 403, 2021
“Supernova Hydrodynamics: A Lab-Scale Study of the Blast-Driven Instability using High Speed Diagnostics”, B. Musci, S. Petter, G. Pathikonda, B. Ochs, D. Ranjan, The Astrophysical Journal, 896-2, 2020
“High-Speed Measurements of Turbulent Mixing in Shock-Driven Variable-Density Flows”, J. Carter and G. Pathikonda (co-lead), N. Jiang, J. Felver, S. Roy, D. Ranjan, Nature Scientific Reports, 9, 2019
“The transition to turbulence in shock-driven mixing: effects of Mach number and initial conditions”, M. Mohaghar, J. Carter, G. Pathikonda, D. Ranjan, Journal of Fluid Mechanics, 2019
“Visualization of supercritical carbon dioxide flow through a converging-diverging nozzle”, C. H. Lim, G. Pathikonda, S. Pidaparti, D. Ranjan, ASME Turbo Expo 2019
“Investigation of inner–outer interactions in a turbulent boundary layer using high-speed PIV”, G. Pathikonda and K. Christensen, Physical Review Fluids, 4, 2019
“Inner–Outer interactions in a turbulent boundary layer overlying complex roughness”, G. Pathikonda and K. Christensen, Physical Review Fluids, 2, 2017
“Cross-stream stereoscopic PIV of a modified turbulent boundary layer over directional surface pattern”, Kevin, J.P. Monty, H.L. Bai, G. Pathikonda, B. Nugroho, J.M. Barros, K.T. Christensen and N. Hutchins, Journal of Fluid Mechanics, 813, pp. 412-435, 2017
“Structure of Turbulent Channel Flow Perturbed by a Wall-Mounted Cylindrical Element”, G. Pathikonda and K. Christensen, AIAA Journal, 2015.
“The role of laminar separation bubble on low Reynolds number airfoils”, A. Mitra, G. Pathikonda, ON Ramesh, 51st AIAA Aerospace Sciences Meeting, 2013
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