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Stagnation-Point Heat Flux on Spheres in Hypersonic High Temperature Flows

Rutschmann, Sabrina and Martinez Schramm, Jan (2011) Stagnation-Point Heat Flux on Spheres in Hypersonic High Temperature Flows. STAB Workshop, 09. - 10. Nov. 2011, Göttingen, Deutschland.

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Abstract

The stagnation-point heat flux on spheres in the High Enthalpy Shock Tunnel Göttingen (HEG) in the German Aerospace Center (DLR) provides information on the total enthalpy of the gas in the reservoir. An easy and fast way for prediction of the measured stagnation-point heat flux is desired. Due to temperatures in the reservoir up to 10 000K at high enthalpy conditions, the gas molecules do not have enough time to recombine while passing the nozzle. Known theoretical correlations do not consider already dissociated free stream in chemical non-equilibrium, so that useful results are not possible. An efficient method for the determination of the stagnation-point heat flux in hypersonic high temperature flows on spheres using user friendly numerical simulation tools, that predicts the heat flux better than theoretical correlations used so far is presented.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:Stagnation-Point Heat Flux on Spheres in Hypersonic High Temperature Flows
Authors:
AuthorsInstitution or Email of Authors
Rutschmann, Sabrinasabrina.rutschmann@dlr.de
Martinez Schramm, Janjan.martinez@dlr.de
Date:10 November 2011
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:pp. 40-41
Series Name:Stab Jahresbericht 2011
Status:Published
Keywords:stagnation-point heat flux, hypersonic flows, HEG, high enthalpy, nozzle flow calculations
Event Title:STAB Workshop
Event Location:Göttingen, Deutschland
Event Type:Workshop
Event Dates:09. - 10. Nov. 2011
Organizer:Deutsches Zentrum für Luft- und Raumfahrt e.V
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 Programm (old)
Location: Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Sabrina Rutschmann
Deposited On:16 Dec 2011 15:31
Last Modified:16 Dec 2011 15:32

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