A spatial marching technique for the inviscid blunt body problem
Conference
·
OSTI ID:6768991
A technique has been developed for obtaining approximate solutions of the inviscid, hypersonic flow on a blunt body with a spatial marching scheme. The scheme introduces the Vigneron pressure gradient approximation into the momentum equation in the direction along the body surface. The resulting governing equations are hyperbolic. With a specified shock wave these equations are solved at the stagnation streamline with an iteration procedure and are solved in the downstream direction with a marching scheme. The complete Euler equations are solved with the numerical scheme when the flow is supersonic. A global iteration procedure is required to obtain the shock wave location. The approximate results from the spatial marching technique are compared with the complete solution of the Euler equations for flow over a sphere. The two results are shown to be in approximate agreement and the spatial marching technique provides useful engineering predictions while requiring considerable less computational time.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA); Cincinnati Univ., OH (USA). Dept. of Aerospace Engineering and Engineering Mechanics
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6768991
- Report Number(s):
- SAND-86-2960C; CONF-870473-1; ON: DE87004526
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
BOUNDARY CONDITIONS
CONSERVATION LAWS
DIFFERENTIAL EQUATIONS
EQUATIONS
FLUID FLOW
FLUID MECHANICS
HYPERSONIC FLOW
ITERATIVE METHODS
MECHANICS
NOSE CONES
NUMERICAL SOLUTION
PARTIAL DIFFERENTIAL EQUATIONS
PRESSURE GRADIENTS
RANKINE-HUGONIOT EQUATIONS
SERIES EXPANSION
SHOCK WAVES
420400* -- Engineering-- Heat Transfer & Fluid Flow
BOUNDARY CONDITIONS
CONSERVATION LAWS
DIFFERENTIAL EQUATIONS
EQUATIONS
FLUID FLOW
FLUID MECHANICS
HYPERSONIC FLOW
ITERATIVE METHODS
MECHANICS
NOSE CONES
NUMERICAL SOLUTION
PARTIAL DIFFERENTIAL EQUATIONS
PRESSURE GRADIENTS
RANKINE-HUGONIOT EQUATIONS
SERIES EXPANSION
SHOCK WAVES