Numerical Simulation of Three-Dimensional Compressible Viscous Flow Characteristics in Axial-Flow Turbines

축류터빈 내부의 3차원 압축성 점성 유동특성에 관한 수치 시뮬레이션

Numerical simulation of viscous compressible flow in turbomachinery cascade involves many problems due to the complex geometry of blade but also flow phenomena. In the present study, numerical investigations have been performed to examine the three-dimensional flow characteristics inside the transonic linear turbine cascades using a commercial code, FLUENT. Multi-block H-type grids are applied to the high-turning turbine rotor blades and comparisons with the experimental data and the numerical results have been done. In addition, the effects of turbulence models on the prediction of the endwall flows are analyzed in the sense of the flow compressibility.