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The Development of a New Viscous Shock-Layer Code for Computing Hypersonic Flows around Blunted Body and its Applications

Kuchi-Ishi, Shigeru (2005) The Development of a New Viscous Shock-Layer Code for Computing Hypersonic Flows around Blunted Body and its Applications. DLR-Interner Bericht. DLR-IB 224-2005 A19, 58 S.

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Abstract

A numerical code has been developed to solve the Viscous Shock Layer (VSL) equations for chemically reacting hypersonic flows around a blunted body. The code basically follows the original solution procedure found in other VSL codes, but some specific treatments have been considered and implemented to enhance the accuracy and robustness. In the present article, the governing equations and physical models employed are firstly presented and then the method of solution is described in detail. By using the present code, it has become possible to solve chemically nonequilibrium flows around a hemisphere typically within 1 minute using a conventional personal computer. The accuracy of the code is validated by comparing with the computational results of other VSL/Navier-Stokes codes and available experimental data. It is shown that the difference between Navier-Stokes results in the stagnation heat flux is around 1 % at most for a Reynolds number range from 103 to 105. Further, an approach to solving stagnation streamline profiles both quickly and accurately under the framework of the present VSL algorithm is proposed and its accuracy and availability are examined. Also proposed is an algorithm which computes the free stream properties of ground-based high enthalpy test facilities from the measured stagnation point heat flux and Pitot pressure as an inverse problem of the VSL analysis. The stagnation point analysis method developed is implemented in this algorithm and the accuracy and reliability of this approach are examined.

Document Type:Monograph (DLR-Interner Bericht)
Title:The Development of a New Viscous Shock-Layer Code for Computing Hypersonic Flows around Blunted Body and its Applications
Authors:
AuthorsInstitution or Email of Authors
Kuchi-Ishi, ShigeruJAXA, Japan
Date:December 2005
Refereed publication:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:58
Status:Published
Keywords:Hypersonic Flows, Blunt Body, Viscous Shock Layer
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W RP - Raumtransport
DLR - Research area:Space
DLR - Program:W RP - Raumtransport
DLR - Research theme (Project):W - Grundlagen Raumtransport - numerische Verfahren (old)
Location: Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > Spacecraft
Deposited By: Dagmar Brennecke-Hosseinzadeh
Deposited On:30 Jan 2006
Last Modified:14 Jan 2010 20:13

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