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High Enthalpy Flow Charcteristics in Arc Heated Facilities

Gülhan, Ali and Esser, Burkard and Koch, Uwe (2014) High Enthalpy Flow Charcteristics in Arc Heated Facilities. In: von Karman Lecture Series 2014-06 VKI Lecture Series, 2014 (06). von Karman Institute for Fluid Dynamics. pp. 1-29. ISBN ISBN-13 978-2-87516-076-8.

Full text not available from this repository.

Abstract

The interpretation of results obtained in ground test facilities needs a detailed knowledge of the flow field. In cold facilities this flow characterisation is predominantly done by classical measurement techniques. Due to the severe flow conditions in high enthalpy facilities most of the classical techniques are not applicable and flow characterisation is only possible as a combined effort of classical and sophisticated measurement techniques and numerical tools. All parameters, which are not accessible to measurement, are characterised by computation. But even for computation the high enthalpy flow environment is challenging. Therefore a combined application of both ground testing facilities with sophisticated measurement techniques and numerical tools is necessary to cover all physical processes around a hypersonic vehicle. In arc heated facilities shortly after the nozzle throat the flow is in non-equilibrium and becomes almost frozen in the free stream. Depending on the nozzle configuration the rotational/translational temperature drops to values below 500 K. Vibrational temperatures of the species could be significantly higher. Over the shock the translational/rotational temperature jumps to a level, which is comparable to the total temperature in the reservoir. Vibrational temperatures and the chemistry relax in the shock layer in particular in the boundary layer.

Item URL in elib:https://elib.dlr.de/95442/
Document Type:Contribution to a Collection
Title:High Enthalpy Flow Charcteristics in Arc Heated Facilities
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Gülhan, AliAli.Guelhan (at) dlr.deUNSPECIFIED
Esser, BurkardBurkard.Esser (at) dlr.deUNSPECIFIED
Koch, UweUwe.Koch (at) dlr.deUNSPECIFIED
Date:2014
Journal or Publication Title:von Karman Lecture Series 2014-06
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:2014
DOI :D/2014/0238/642
Page Range:pp. 1-29
Publisher:von Karman Institute for Fluid Dynamics
Series Name:VKI Lecture Series
ISBN:ISBN-13 978-2-87516-076-8
Status:Published
Keywords:High Enthalpy Flow Characterization, Arc Heated Facilities, Advanced Apectroscopic Techniques
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 - Konzepte und Entwurf
Location: Köln-Porz
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Über- und Hyperschalltechnologien
Deposited By: Gülhan, Dr.-Ing. Ali
Deposited On:26 Feb 2015 08:37
Last Modified:01 Apr 2015 12:28

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