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

Rutschmann, Sabrina (2011) Stagnation-Point Heat Flux on Spheres in Hypersonic High Temperature Flows. Master's, DLR Göttingen und Georg-August-Universität Göttingen.

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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. This thesis presents 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.

Document Type:Thesis (Master's)
Title:Stagnation-Point Heat Flux on Spheres in Hypersonic High Temperature Flows
Authors:
AuthorsInstitution or Email of Authors
Rutschmann, Sabrinasabrina.rutschmann@dlr.de
Date:September 2011
Number of Pages:107
Status:Published
Keywords:stagnation-point heat flux, hypersonic flows, HEG, high enthalpy, nozzle flow calculations, Fay & Riddell, Verant, DLR TAU Code
Institution:DLR Göttingen und Georg-August-Universität Göttingen
Department:AS-RF und Fakultät für Physik
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 15:27
Last Modified:12 Dec 2013 21:24

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