[KSCI] Korea Science Citation Index Service

http://dx.doi.org/10.5139/IJASS.2016.17.2.149

Flow Field Analysis on the Stagnation Streamline of a Blunt Body

Lee, Chang-Ho (Aerodynamics Research Team, Korea Aerospace Research Institute)

Publication Information

International Journal of Aeronautical and Space Sciences / v.17, no.2, 2016 , pp. 149-156 More about this Journal

Abstract

The hypersonic flow on the stagnation streamline of a blunt body is analyzed with quasi one-dimensional (1-D) Navier-Stokes equations approximated by adopting the local similarity to the two-dimensional (2-D)/axisymmetric Navier-Stokes equations. The governing equations are solved using the implicit finite volume method. The computational domain is confined from the stagnation point to the shock wave, and the shock fitting method is used to find the shock position. We propose a boundary condition at the shock, which employs the shock wave angle in the vicinity of the stagnation streamline using the shock shape correlation. As a result of numerical computation conducted for the hypersonic flow over a sphere, the proposed boundary condition is shown to improve the accuracy of the prediction of the shock standoff distance. The quasi 1-D Navier-Stokes code is efficient in computing time and is reliable for the flow analysis along the stagnation streamline and the prediction of heat flux at the stagnation point in the hypersonic blunt body flow.

Keywords

Hypersonic Flow; Blunt Body; Stagnation Streamline; Heat Flux;

Citations & Related Records

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