Accession Number : ADP007705

Title :   Application of Finite Element Method to Hypersonic Nozzle Flow Computations,

Corporate Author : TECHNISCHE HOCHSCHULE AACHEN (GERMANY F R)

Personal Author(s) : Koschel, W. ; Rick, W. ; Bikker, S.

Report Date : FEB 1992

Pagination or Media Count : 14

Abstract : An explicit Taylor-Galerkin FEM algorithm used for the solution of Euler/Navier-Stokes equations is applied for the computation of steady-state frozen equilibrium flow in single expansion ramp nozzles (SERN) and in plug nozzles for hypersonic propulsion systems. External flow conditions are taken into account. For the determination of nozzle performance a detailed 2D/3D-flow analysis in regions with complex geometries has been performed using unstructured computational grids with adaptive mesh refinement. Some results for the investigated nozzle configurations at different flight conditions are presented and discussed. Thrust vectoring by modification of the lower nozzle flap shape has been studied additionally.

Descriptors :   *HYPERSONIC NOZZLES, *HYPERSONIC FLOW, ALGORITHMS, COMPUTATIONS, DETERMINATION, EQUATIONS, EXPANSION, EXTERNAL, FLOW, FROZEN EQUILIBRIUM FLOW, GRIDS, MESH, NAVIER STOKES EQUATIONS, NOZZLES, PLUG NOZZLES, PLUGS, PROPULSION SYSTEMS, RAMPS, REGIONS, STEADY STATE, FINITE ELEMENT ANALYSIS, COMPUTATIONS.

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE