| 1 | Modified k-ω model using kinematic vorticity for corner separation in compressor cascades显示文摘A new method of modifying the conventional k-ω turbulence model for corner separation is proposed in this paper. The production term in the ω equation is modified using kinematic vorticity considering fluid rotation and deformation in complex geometric boundary conditions. The corner separation flow in linear compressor cascades is calculated using the original k-ω model, the modified k-ω model and the Reynolds stress model(RSM). The numerical results of the modified model are compared with the available experimental data, as well as the corresponding results of the original k-ω model and RSM. In terms of accuracy, the modified model, which significantly improves the performance of the original k-ω model for predicting corner separation, is quite competitive with the RSM. However, the modified model, which has considerably lower computational cost, is more robust than the RSM. | LIU YangWei YAN Hao FANG Le LULiPeng LI QiuShi SHAO Liang | 2016 | Science China(Technological Sciences)2016，59，5： | 7 |
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