@techreport{oai:jaxa.repo.nii.ac.jp:00043444, author = {古川, 雅人 and 中野, 隆 and 井上, 雅弘 and Furukawa, Masato and Nakano, Takashi and Inoue, Masahiro}, month = {Nov}, note = {An implicit upwind scheme has been developed for simulations of unsteady compressible viscous flows. The inviscid fluxes are evaluated using a highly accurate upwind scheme based on a TVD finite volume formulation with the Roe's approximate Riemann solver. The algebraic turbulence model of Baldwin and Lomax is employed. A zonal approach with composite grids is implemented to simplify grid generations. A new time-linearization of the inviscid fluxes evaluated by the Roe's Riemann solver is presented. No approximate factorization is introduced, and unfactored implicit equations are solved by a pointwise relaxation method. To obtain time-accurate solutions, 30 inner iterations are performed at each time step. Numerical examples are presented for unsteady flows in a transonic turbine cascade where periodic unsteadiness is caused by the trailing edge vortex sheddidng., 資料番号: NALSP0014011, レポート番号: NAL SP-14}, title = {緩和形陰的風上法による非定常圧縮性粘性流れの数値シミュレーション}, year = {1990} }