Bulletin of the American Physical Society
72nd Annual Meeting of the APS Division of Fluid Dynamics
Volume 64, Number 13
Saturday–Tuesday, November 23–26, 2019; Seattle, Washington
Session F01: Invited Talk: Dissecting Shock-Boundary Layer Interaction in Hypervelocity Flow |
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Chair: Noel T. Clemens, University of Texas, Austin Room: 6b |
Sunday, November 24, 2019 2:43PM - 3:18PM |
F01.00001: Dissecting Shock-Boundary Layer Interaction in Hypervelocity Flow Invited Speaker: Joanna Austin Flying at velocities where the kinetic energy is comparable to the dissociation energy of the surrounding atmosphere leads to complex, nonlinear coupling between the flowfield and the gas thermochemistry. Shock-boundary layer interactions in such hypervelocity conditions are highly dynamically sensitive to this energy exchange and present significant predictive challenges. This presentation discusses our recent work in probing the flowfield directly, moving beyond surface measurements, in experiments carried out in two high-enthalpy facilities. Unique spectroscopic measurements of post-shock dissociated species and vibrational temperatures are coupled with high-speed flow structure visualizations to examine these time-dependent, nonequilibrium interactions. [Preview Abstract] |
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