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Application of axisymmetric analog to unstructured grid for aeroheating prediction of hypersonic vehicles

H. Parhizkar (Center of Excellence in Computational Aerospace Engineering, Department of Aerospace Engineering, Amirkabir University of Technology, Tehran, Iran)
S.M.H. Karimian (Center of Excellence in Computational Aerospace Engineering, Department of Aerospace Engineering, Amirkabir University of Technology, Tehran, Iran)

International Journal of Numerical Methods for Heat & Fluid Flow

ISSN: 0961-5539

Article publication date: 15 May 2009

404

Abstract

Purpose

The purpose of this paper is to present an engineering inviscid‐boundary layer method for the calculation of convective heating rates on three‐dimensional non‐axisymmetric geometries at angle of attack.

Design/methodology/approach

Based on the axisymmetric analog, convective heating rates are calculated along the surface streamlines which are determined using the inviscid properties calculated on an unstructured grid.

Findings

Since the method is capable of using inviscid properties calculated on an unstructured grid, it is applicable to a variety of configurations and it requires much less computational effort than a Navier‐Stokes code. The results of the present method are evaluated on different wing body configurations in laminar and turbulent hypersonic equilibrium flows. In comparison to experimental data, the present results are found to be fairly accurate in the windward and leeward regions.

Practical implications

With this approach, heating rates can be predicted on general three‐dimensional configurations at hypersonic speeds in an accurate and fast scheme.

Originality/value

In order to calculate the heating rates at any specific point on the surface, a technique is developed to calculate the inviscid surface streamlines in a backward manner using the inviscid velocity components. The metric coefficients are also calculated using a new simple technique.

Keywords

Citation

Parhizkar, H. and Karimian, S.M.H. (2009), "Application of axisymmetric analog to unstructured grid for aeroheating prediction of hypersonic vehicles", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 19 No. 3/4, pp. 501-520. https://doi.org/10.1108/09615530910938407

Publisher

:

Emerald Group Publishing Limited

Copyright © 2009, Emerald Group Publishing Limited

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