IGTC-107 A Higher-Order CFD Approach to Shock/Vortex Interaction and its Application to Turbomachinery(Organized Session I ADVANCED COMPUTATIONAL SIMULATION AND DESIGN)
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概要
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A higher-order CFD approach for simulating the unsteady shock/vortex interaction is presented, and applied to the simulation of some practical cascade flows in which shocks are strongly interacting to the boundary layer and the wake. The main concept of the present approach is to employ the Fourthorder Compact MUSCL TVD (FCMT) scheme proposed by the authors in space difference and a maximum second-order integral scheme in time integration. The set of the higherorder accurate schemes enable us to get shocks, contact discontinuities, and vortices very clearly. Moreover, since both schemes are constructed of quite simple forms, the extension to the existing CFD codes is also very easy. As numerical examples, the unsteady transonic flow around the airfoil with high angle of attack is calculated to show the reliability of the present approach, and the unsteady transonic turbine cascade flows and the unsteady supersonic compressor cascade flows considering the on- and off-design conditions are calculated as the application. Finally, the possibility or potential of the present CFD approach is discussed by showing some interesting calculated results.
- 公益社団法人日本ガスタービン学会の論文
著者
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Yamamoto S.
Dept. of Earth and Space Sci., Grad. Sch. of Sci., Osaka Univ.
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Daiguji H.
Dept. Of Aeronautics And Space Engng. Tohoku University
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Yuan X.
Dept. of Thermal Engng., Tsinghua University
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