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Accession Number:
ADA278942
Title:
Investigation of Burnett Equations for Two-Dimensional Hypersonic Flow
Corporate Author:
STANFORD UNIV CA DEPT OF AERONAUTICS AND ASTRONAUTICS
Report Date:
1994-04-01
Abstract:
Two separate areas of investigation are explored of two-dimensional flow fields computed from the Burnett and Navier-Stokes equations evaluation of various forms of Burnett equations from computations of 1-D hypersonic shock structure and 2-D flow over a flat plate at zero incidence and investigation of the interaction at high altitudes of a hypersonic oblique shock impinging on a cowl lip. Among five different formulations of Burnett equations, two were found to exhibit in shock structure a small region of flow wherein the heat flux is physically unreal. Preliminary computations with the three other formulations are made for flow over a flat plate. It is found that the well-known severe overheating, due to oblique shock impingement on a leading edge, decreases significantly as altitude increases, disappearing at Knudsen numbers above about 0.1. Burnett Equations, Hypersonic flow, Shock structure, Shock on cowl lip interaction.
Descriptive Note:
Final rept. 1 Nov 1992-31 Oct 1993
Pages:
0016
Distribution Statement:
Approved for public release; distribution is unlimited.
Contract Number:
F49620-92-J-0012
File Size:
0.60MB
