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Numerical Investigation of Hypersonic Turbulence Transition Delay via Porous Walls

Scalo, Carlo and Sousa, Victor C. B. and Wartemann, Viola and Wagner, Alexander (2018) Numerical Investigation of Hypersonic Turbulence Transition Delay via Porous Walls. 71st Annual Meeting of the APS Division of Fluid Dynamics, 18.–20. Nov. 2018, Atlanta, Georgia.

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Abstract

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 is outlined. 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.

Item URL in elib:https://elib.dlr.de/124574/
Document Type:Conference or Workshop Item (Speech)
Title:Numerical Investigation of Hypersonic Turbulence Transition Delay via Porous Walls
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Scalo, Carloscalo (at) purdue.eduUNSPECIFIED
Sousa, Victor C. B.vsousa (at) purdue.eduUNSPECIFIED
Wartemann, Violaviola.wartemann (at) dlr.deUNSPECIFIED
Wagner, AlexanderAlexander.Wagner (at) dlr.deUNSPECIFIED
Date:November 2018
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:hypersonic boundary layer, cone, direct numerical simulation (DNS), carbon/carbon (C/C), transition delay
Event Title:71st Annual Meeting of the APS Division of Fluid Dynamics
Event Location:Atlanta, Georgia
Event Type:international Conference
Event Dates:18.–20. Nov. 2018
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Transport
DLR - Research area:Raumfahrt
DLR - Program:R RP - Raumtransport
DLR - Research theme (Project):R - Shefex III, Re-usability Flight Experiment (ReFEx)
Location: Braunschweig , Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > Spacecraft, BS
Institute for Aerodynamics and Flow Technology > Spacecraft, GO
Deposited By: Wartemann, Viola
Deposited On:13 Dec 2018 14:39
Last Modified:13 Dec 2018 14:39

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