擬圧縮性法による二次元ディフューザの乱流解析

概要

論文の詳細を見る
A numerical method using the pseudo-compressibility method is applied to the analysis of turbulent flow in the two-dimensional diffuser. Based on the method of lines, the rational Runge-Kutta time integration scheme is combined with the central finite difference approximation for spatial discretization. Residual averaging is incorporated into the basic scheme in order to accelerate the convergence to a steady-state solution. Diffuser area ratio and diffuser length strongly affect flow pattern in the diffuser. Steady-state solutions of unstable flows with separation are easily obtained by this analysis. It is found that results of this analysis are in good agreement with experimental results. The pseudo-compressibility method using the low-Reynolds-number-type k-ε model is stable and useful for turbulent flow analysis.
社団法人日本機械学会の論文
1995-05-25