Accession Number : ADA194687

Title :   Numerical Simulation of Three Dimensional Transonic Flows.

Descriptive Note : Technical rept.,

Corporate Author : ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s) : Sahu, Jubaraj ; Steger, Joseph L

PDF Url : ADA194687

Report Date : Mar 1988

Pagination or Media Count : 34

Abstract : The three dimensional flows over a projectile have been computed using an implicit, approximately factored, partially flux-split algorithm. A simple composite grid scheme has been developed in which a single grid is partitioned into a series of smaller grids for application which require an external large memory device such as the SSD of the CRAY X-MP/48 or multi-tasking. The accuracy and stability of the composite grid scheme has been tested by numerically simulating the flow over an ellipsoid at angle of attack and comparing the solution with a single grid solution. The flow field over a projectile at M = 0.96, 1.1. and 4 deg angle of attack has been computed using a fine grid and compared with experiment. Keywords: Asymmetric shocks; Navier Stokes equations.

Descriptors :   *NAVIER STOKES EQUATIONS, *TRANSONIC FLOW, *DIGITAL SIMULATION, ACCURACY, ELLIPSOIDS, EXTERNAL, FLOW FIELDS, GRIDS, MATHEMATICAL MODELS, MEMORY DEVICES, NUMERICAL ANALYSIS, SOLUTIONS(GENERAL), THREE DIMENSIONAL FLOW, SHOCK

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE