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Rough-Wall Heat Flux Augmentation Analysis Within the ExoMars Project

Neeb, Dominik and Gülhan, A. and Merrifield, J.A. (2015) Rough-Wall Heat Flux Augmentation Analysis Within the ExoMars Project. Journal of Spacecraft and Rockets. American Institute of Aeronautics and Astronautics (AIAA). DOI: 10.2514/1.A33306 ISSN 0022-4650

Full text not available from this repository.

Official URL: http://arc.aiaa.org/doi/abs/10.2514/1.A33306

Abstract

Surface roughness, especially if enhanced due to ablative form change, increases skin friction drag and convective heat transfer over reentry vehicles. Although the corresponding heat flux augmentation is usually lower compared to increased friction, careful consideration in the prediction of the resulting heat load levels is required. Within the European Mars mission ExoMars, the potential roughness impact on the thermal protection system of the descent module has been analyzed based on analytical predictions, numerical calculations, and dedicated experimental campaigns. This paper describes the experimental efforts in the compressible flow regime to study the impact of roughness at representative conditions. The data are discussed based on comparisons with prediction methods and results of other investigators. Based on these data, the numerical predictive capabilities within the ExoMars program are characterized and validated.

Item URL in elib:https://elib.dlr.de/101573/
Document Type:Article
Title:Rough-Wall Heat Flux Augmentation Analysis Within the ExoMars Project
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Neeb, DominikDLRUNSPECIFIED
Gülhan, A.DLRUNSPECIFIED
Merrifield, J.A.Fluid Gravity Engineering LtdUNSPECIFIED
Date:22 December 2015
Journal or Publication Title:Journal of Spacecraft and Rockets
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
DOI :10.2514/1.A33306
Editors:
EditorsEmail
Edquist, K. T.NASA Langley Research Center
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
Series Name:Journal of Spacecraft and Rockets
ISSN:0022-4650
Status:Published
Keywords:roughness, heat flux, augmentation, ExoMars
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 - Rückkehrtechnologie
Location: Köln-Porz
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Über- und Hyperschalltechnologien
Deposited By: Neeb, Dominik
Deposited On:06 Jan 2016 14:24
Last Modified:08 Mar 2018 18:45

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