Accession Number : ADP004797

Title :   Navier-Stokes Computations of Transonic Flow Over a Projectile with a Two-Equation Model of Turbulence,

Corporate Author : ARMY BALLISTIC RESEARCH LAB ABERDEEN PROVING GROUND MD

Personal Author(s) : Sahu,J. ; Danberg,J. E.

Report Date : AUG 1984

Pagination or Media Count : 14

Abstract : A thin-layer Navier-Stokes code has been used to compute the axisymmetric turbulent flow over a projectile at transonic speeds. The thin layer form of the compressible Navier-Stokes equations is solved using a time dependent, implicit numerical algorithm. Numerical computations have been made using aero-equation (algebraic) and two-equation (kinetic energy and length scale) turbulence eddy viscosity models. The algorithm, and how the turbulence models are incorporated into it, are described. Computed results have been obtained for a secant-ogive-cylinder-boattail shape at M infinity = .94 and .97 using both models and are compared with experiment. (Author)

Descriptors :   *GAS FLOW, COMPUTATIONS, *NAVIER STOKES EQUATIONS, *TRANSONIC FLOW, *TURBULENT FLOW, PROJECTILES, TURBULENCE, AXISYMMETRIC, MATHEMATICAL MODELS, ALGORITHMS

Distribution Statement : APPROVED FOR PUBLIC RELEASE