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Computation of radiative and convective contributions to Viking afterbody heating

Potter, Daniel and Karl, Sebastian and Lambert, Markus and Hannemann, Klaus (2014) Computation of radiative and convective contributions to Viking afterbody heating. 44th AIAA Thermophysics Conference, 24. - 27. June 2013, San Diego, USA.

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Official URL: http://arc.aiaa.org/doi/pdf/10.2514/6.2013-2895

Abstract

This paper investigates the hypothesis that the observered gap between CFD and thermocouple-derived flight measurements for afterbody heating of the Viking spacecraft can be accounted for by infrared radiation from CO2 molecules in the wake flow. The DLR TAU code is implemented to simulate the Viking I spacecraft at an altitude of 37.4km on a flow-adapted hybrid 3D grid with radiation- flowfield coupling. The radiation spectrum of the CO2 molecule is represented by a statistical narrow band model and radiation transport is calculated via an opacity-binned ray-tracing model. The calculated total heating level on the aluminium base cover is in good agreement with the flight data, while the total heating level for the fiberglass cover is overpredicted. Furthermore, radiation-flowfield coupling is found to reduce the total heat flux on the vehicle surface by up to 10% compared to when radiation is treated in an uncoupled manner.

Item URL in elib:https://elib.dlr.de/87014/
Document Type:Conference or Workshop Item (Speech)
Additional Information:AIAA-2013-2895, doi: 10.2514/6.2013-2895
Title:Computation of radiative and convective contributions to Viking afterbody heating
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Potter, Danieldaniel.potter (at) dlr.deUNSPECIFIED
Karl, Sebastiansebastian.karl (at) dlr.deUNSPECIFIED
Lambert, Markusmarkus.lambert (at) dlr.deUNSPECIFIED
Hannemann, Klausklaus.hannemann (at) dlr.deUNSPECIFIED
Date:2014
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 1-16
Series Name:Conference Proceedings online
Status:Published
Keywords:Re-entry, CFD, Aerothermodynamics, Radiation
Event Title:44th AIAA Thermophysics Conference
Event Location:San Diego, USA
Event Type:international Conference
Event Dates:24. - 27. June 2013
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 - Raumfahrzeugsysteme - Anlagen u. Messtechnik
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Micknaus, Ilka
Deposited On:06 Jan 2014 09:24
Last Modified:08 May 2014 23:20

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