High-Density Mesh Computations of Airfoil Flows by Building-Cube Method

摘要

In this paper, a new approach named Building-Cube Method (BCM) based on a Cartesian mesh is developed aimed for large-scale, high resolution computations of flows using parallel computers. In the present method, a flow field is divided into a number of cubes (squares in 2D) of various sizes. Each cube is a computational sub-domain with Cartesian mesh of equal spacing and equal number of nodes for easy parallelization. The geometrical size of each cube is determined by adapting to the geometry and the flow features so as to cope with broadband characteristic lengths of the flow. The method is applied to a four-elements airfoil at high Reynolds number. The time-averaged pressure distribution shows a good agreement with the experiment.