Investigation of Burnett Equations for Two-Dimensional Hypersonic Flow
Final rept. 1 Oct 90-30 Sep 91,
STANFORD UNIV CA DEPT OF AERONAUTICS AND ASTRONAUTICS
Pagination or Media Count:
In 1935, D. Burnett developed a higher order set of constitutive stress relationships from a class of solutions to the Boltzman equations. Our research on Burnett equations has identified five basic scientific issues in need of resolution before really satisfactory computations of 2D or 3D flow fields can be made with these equations. These issues relate to 1 surface boundary conditions, 2 frame independence, 3 material derivative approximation, 4 positive-definite dissipation , and 5 upper altitude limit for applicability. This report describes progress in areas 1, 3, and 4, and also an investigation of the interaction of a thick oblique shock impinging on a cowl lip in high-altitude hypersonic flow.
- Fluid Mechanics