Author(s)

E. Atta, W. Yeung, R. Foo & H. Chu

Abstract

Navier-Stokes computations of missile aerodynamics E. Atta, W. Yeung, R Foo, H. Chu School of Mechanical and Production Engineering, Nanyang Technological University, Singapore ABSTRACT A computational and experimental investigation have been conducted for the prediction of missile flow fields with emphasis on subsonic and transonic flight conditions. The computational method is based on the thin shear layer formulation of the Navier-Stokes equations and a finite volume Runge-Kutta time marching algorithm. Computations performed for a missile model indicate that the salient flow features such as flow separation, and vortex formation are adequately pre- dicted. In addition, good correlation is obtained between the computed and experimental surface pressure distributions, however, less agreement is obtained for turbulent flow conditions. Convergence performance of the numerical algorithm, numerical diffusion errors, and grid size effects are also discussed. INTRO

Keywords