Building-Cube Method for Flow Problems with Broadband Characteristic Length

Abstract

In this paper, requirements for the next generation CFD in the near-future computational environment is discussed and a new approach named Building-Cube Method is proposed aimed for large-scale, high resolution computations around a complex geometry. 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. The geometrical size of each cube is determined by adapting to geometry and flow features so as to cope with broadband characteristic length of the flow. Equal spacing and equal number of Cartesian grid in each cube make it easy to parallelize the flow solver and to handle huge data output. The approach is tested for a shock/boundary layer interacting problem.