Simulation of unsteady flows inside solid propellant rocket motors
Abstract
A second-order upwind scheme is presented for solving the 3-D Euler equations and the 2-D axisymmetrical Navier-Stokes equations on unstructured meshes containing simultaneously several kinds of elements. One of its uses is the calculation of propulsion chamber flows where unsteady patterns may appear. The first part of this paper is devoted to the description of the numerical scheme and its use. The second one is devoted to the results obtained within a research program supported by CNES concerning the study of instabilities inside large solid propellant boosters. The first application which is presented, concerns the simulation of an acoustic boundary layer. The second one presents the simulation of a vortex shedding phenomenon occurring in a planar motor. The present numerical scheme proved to be well adapted to this kind of problems.
- Publication:
-
Operation of Segmented Solid Rocket Motors for Space Launchers
- Pub Date:
- 1993
- Bibcode:
- 1993ossr.proc....9G
- Keywords:
-
- Combustion Stability;
- Computerized Simulation;
- Solid Propellant Combustion;
- Solid Propellant Rocket Engines;
- Unsteady Flow;
- Upwind Schemes (Mathematics);
- Combustible Flow;
- Euler Equations Of Motion;
- Navier-Stokes Equation;
- Runge-Kutta Method;
- Three Dimensional Flow;
- Two Dimensional Flow;
- Spacecraft Propulsion and Power