ABSTRACT

Numerical simulations using the Reynolds-averaged Navier-Stokes equations are conducted to calculate the air flow field. Our numerical approach to solve the NS equations is based on the finite volume form of the integral equations. The equations are the expression of the conservation principle for mass, momentum and energy. In a domain of volume Ω with boundary S, the equations may be written in the following form[3]:

∂ ∂

1 Re

(1)

As used for the present computations, the cellcentered finite volume methods are employed to solve the Navier-Stokes equations. The Flux-Vector Splitting (FVS) method of van Leer is implemented as Reference 2. A time-accurate, fully implicit method based on LU-SGS has been used to solve the viscous flow problems. At the

1 INTRODUCTION

Ice accretion and its subsequent build-up is one of the potential hazards in airplane flight, which lead to deterioration of aircraft aerodynamics performance. Prediction of ice accretion is thus an important part of airplane design[1].