定常/非定常問題に対する流束分離法の比較研究(流体工学, 流体機械)

概要

論文の詳細を見る
When introducing the TVD method to the system equation, it is important to treat discontinuity near the shock waves. Flux splitting method handles this discontinuity by separating flux at the cell interface. The flux splitting method is divided into two categories : FDS (Flux Difference Splitting) and FVS (Flux Vector Splitting). However, they have some defects. For example, in the case of FDS, it becomes diffcult to maintain stability because of strong expansion wave. Also, excessive numerical diffusivity makes the results far from the reality in the case of FVS. Recently AUSM (Advection Upstream Splitting Method) has been proposed. In the present paper, a blunt body with a compressive corner are investigated using three flux splitting methods. We demonstrate the efficiency of AUSM, compared to the other flux splitting methods.
一般社団法人日本機械学会の論文
1997-08-25