タービン段落内の二次元圧縮性乱流解析

概要

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A numerical technique for the analysis of two-dimensional compressible turbulent flows in a turbine stage is presented. A steady interaction between nozzle and bucket flows is assumed. To calculate the flows in arbitrarily shaped geometries, a control volume method combined with a body-fitted curvilinear coordinate system is used to obtain spatially discretized governing equations. For time integration, a damping surface technique is employed to ensure the stability of computation and to reduce computing time. In the present analysis, a two-equation turbulence model is introduced to estimate the turbulence effect. In order to assure the effectiveness of the present method, a computation is carried out for the two-dimensional section in a turbine stage, and the numerical results are compared with the experimental data. It is shown that the present method gives encouraging results for two-dimensional flow prediction in a turbine stage.
一般社団法人日本機械学会の論文
1985-11-25