A generalized random choice method for gas dynamics
Abstract
A generalization of the Riemann problem for gas dynamical flows influenced by curved geometry, such as flows in a variable-area duct is solved. For this generalized Riemann problem the initial data consists of a pair of steady-state solutions separated by a jump discontinuity. The solution of the generalized Riemann problem is used as a basis for a random choice method in which steady-state solutions are used as an Ansatz to approximate the spatial variation of the solution between grid points. For nearly steady flow in a Laval nozzle, where this Ansatz is appropriate, this generalized random choice method gives greatly improved results.
- Publication:
-
In Army Research Office Proc. of the 1982 Army Numerical Anal. and Computers Conf. p 137-148 (SEE N83-14930 05-59
- Pub Date:
- August 1982
- Bibcode:
- 1982anac.conf..137G
- Keywords:
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- Cauchy Problem;
- Flow Characteristics;
- Gas Dynamics;
- Approximation;
- Laval Number;
- Spatial Distribution;
- Fluid Mechanics and Heat Transfer