Bulletin of the American Physical Society
71st Annual Meeting of the APS Division of Fluid Dynamics
Volume 63, Number 13
Sunday–Tuesday, November 18–20, 2018; Atlanta, Georgia
Session G29: Compressible Turbulence
10:35 AM–12:06 PM,
Monday, November 19, 2018
Georgia World Congress Center Room: B401
Chair: Diego Donzis, Texas A&M University
Abstract ID: BAPS.2018.DFD.G29.7
Abstract: G29.00007 : Numerical Investigation of Hypersonic Turbulence Transition Delay via Porous Walls*
11:53 AM–12:06 PM
The present abstract outlines the progress made towards conducting a numerical analysis using direct numerical simulation (DNS) of transition to turbulence in a hypersonic boundary layer over a cone which include the effects of acoustic energy absorption by a porous insert at the conical surface. A previous experimental study by Wagner et al. Exp. Fluids (2013) showed the capability of carbon/carbon (C/C) ultrasonically absorptive porous surfaces of performing a hypersonic boundary layer transition delay. The current numerical study uses the same flow conditions to compare the transition control obtained via the modelling the carbon/carbon (C/C) acoustic response as a complex impedance boundary condition (IBC) to the experimental results. To accurately model a fully anisotropic material such as C/C a new acoustic model was developed based on experimental results of pore size distribution.
*We acknowledge the support of the Rosen Center for Advanced Computing (RCAC) at Purdue and the Air Force Office of Scientific Research (AFOSR) YIP 2018 (FA9550-18-1-0292). Victor Sousa also acknowledges the support of the prestigious Lynn Fellowship administered by the interdisciplinary Computational Science and Engineering (CS\&E) graduate program at Purdue University.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.G29.7
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