https://scholars.lib.ntu.edu.tw/handle/123456789/292636
標題: | Numerical studies of the passage flowfield in a 3-D transonic turbine blade cascade | 作者: | Tai, C.-H. Hsu, U.-K. Wang, D.-S. Chen, P.-H. Miao, J.-M. PING-HEI CHEN |
關鍵字: | CFD; Endwall; Separation bubble; Transonic rotors; Vortex | 公開日期: | 2001 | 卷: | 17 | 期: | 4 | 起(迄)頁: | 221-230 | 來源出版物: | Journal of Mechanics | 摘要: | A three-dimensional Navior-Stokes analyzer based on control volume method is developed to simulate the complex flow field within a turbomachinery. With VKI-CT2 turbine blade as the test model, numerical results are compared with experimented data and shows the existence of separation-transition bubble and the interaction of shock with turbulent boundary layer flow. The governing Navier-Stokes equations are solved by an improved numerical method that uses an upwind flux-difference split scheme for spatial descretization and an explicit optimally smoothing multi-stage scheme for time integration. Turbulent stresses are approximated by modifying Baldwin-Lomax algebraic, k-ε, R-k-ε and RNG k-ε turbulence models. According to the results of this research, this analyzer can indeed effectively modulate and simulate the aerodynamic characteristic of the transonic turbine rotor near the endwall. |
URI: | http://www.scopus.com/inward/record.url?eid=2-s2.0-0035686522&partnerID=MN8TOARS http://scholars.lib.ntu.edu.tw/handle/123456789/292636 https://www.scopus.com/inward/record.uri?eid=2-s2.0-0035686522&doi=10.1017%2fs1727719100001957&partnerID=40&md5=43672b8de08b62ec003633524efb9b96 |
ISSN: | 17277191 | SDG/關鍵字: | Aerodynamics; Boundary layer flow; Bubbles (in fluids); Computational fluid dynamics; Navier Stokes equations; Numerical analysis; Stress analysis; Transonic flow; Turbomachine blades; Turbulent flow; Transonic rotors; Turbulent stresses; Gas turbines |
顯示於: | 機械工程學系 |
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