LARGE EDDY SIMULATION OF A CONDENSING WET STEAM TURBINE CASCADE

被引:0
|
作者
Post, Pascal [1 ]
Winhart, Benjamin [1 ]
di Mare, Francesca [1 ]
机构
[1] Ruhr Univ Bochum, Dept Mech Engn, Chair Thermal Turbomachines & Aeroengines, D-44801 Bochum, Germany
关键词
THERMODYNAMIC PROPERTIES; FORMULATION; FLOW; SCHEMES; TERMS; WATER;
D O I
暂无
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
The influence of turbulence modeling approach by means of (U)RANS and LES on the overall modeling of turbulent condensing wet steam flows is investigated using the example of a low-pressure steam turbine cascade. For an accurate numerical treatment of turbulence in presence of shock waves, necessary for predictive scale-resolving computations, a hybrid flux treatment switches between a baseline non-dissipative central flux in energy consistent split form and a shock-capturing upwind flux in shocked regions based on a shock sensor. Condensation is realized by a mono-dispersed Euler-Euler source term model, the equation of state by the highly efficient and accurate SBTL tabulation. The numerical treatment is validated with a decay of homogeneous isotropic turbulence test case containing eddy shocklets. The measurement results of the condensing wet steam cascade are overall much better matched by LES compared to RANS and URANS. Analysis shows that the LES is much better able to account for the inherently unsteady nature of the spontaneous condensation process and its interaction with the trailing edge shock wave structure.
引用
收藏
页数:12
相关论文
共 50 条
  • [31] Large eddy simulation of compressible transitional cascade flows
    Matsuura, K.
    Kato, C.
    ADVANCES IN FLUID MECHANICS VI, 2006, 52 : 499 - +
  • [32] Influence of steam condensing for fluid and geometry parameters in steam turbine
    Zhang, Dongyang
    Cai, Hui
    Jiang, Hongde
    Qilunji Jishu/Turbine Technology, 1999, 41 (06): : 339 - 341
  • [33] Large Eddy Simulation of a Controlled Diffusion Compressor Cascade
    W. Andrew McMullan
    Gary J. Page
    Flow, Turbulence and Combustion, 2011, 86 : 207 - 230
  • [34] Large Eddy Simulation of a Controlled Diffusion Compressor Cascade
    McMullan, W. Andrew
    Page, Gary J.
    FLOW TURBULENCE AND COMBUSTION, 2011, 86 (02) : 207 - 230
  • [35] Steam condensing flow modeling in turbine channels
    Wroblewski, Wlodzimierz
    Dykas, Slawomir
    Gepert, Aleksandra
    INTERNATIONAL JOURNAL OF MULTIPHASE FLOW, 2009, 35 (06) : 498 - 506
  • [36] CONDENSING THE DUMPED STEAM DURING A TURBINE BYPASS
    KALS, W
    JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME, 1992, 114 (04): : 621 - 631
  • [37] Condensing the dumped steam during a turbine bypass
    Kals, W.
    Journal of Engineering for Gas Turbines and Power, 1992, 114 (04) : 621 - 631
  • [38] Numerical simulation of wet steam condensing flow based on a two-fluid model
    Wu, Xiaoming
    Li, Liang
    Li, Guojun
    Feng, Zhenping
    CHALLENGES OF POWER ENGINEERING AND ENVIRONMENT, VOLS 1 AND 2, 2007, : 1331 - 1336
  • [39] Towards Large Eddy Simulation of gas turbine compressors
    McMullan, W. A.
    Page, G. J.
    PROGRESS IN AEROSPACE SCIENCES, 2012, 52 : 30 - 47
  • [40] A comprehensive investigation of finding the best location for hot steam injection into the wet steam turbine blade cascade
    Aliabadi, Mohammad Ali Faghih
    Lakzian, Esmail
    Khazaei, Iman
    Jahangiri, Ali
    ENERGY, 2020, 190