LES of flow in a low pressure turbine cascade with oncoming wakes - The effect of wake strength and frequency

被引：0
|
作者：
Wissink, Jan [1 ]
Rodi, Wolfgang [1 ]
机构：
[1] Univ Karlsruhe, Inst Hydromech, D-76131 Karlsruhe, Germany
来源：
DIRECT AND LARGE-EDDY SIMULATION V, PROCEEDINGS | 2004年 / 9卷
关键词：
LES; transition; free-stream disturbances;
D O I：
暂无
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Three-dimensional large eddy simulations of flow in a low-pressure turbine cascade consisting of modern highly loaded turbine blades have been performed. The effects of the variation of frequency and strength of the impinging wakes on the suction side boundary layer transition are studied. Weak impinging wakes with a low frequency only manage to mildly trigger unstable modes, leading to a natural transition scenario. With increasing strength and/or frequency, the trigering becomes more intense and a by-pass transition scenario is obtained. In none of the simulations the boundary layer is found to become fully turbulent.
引用
收藏
页码：643 / 650
页数：8
相关论文
共 50 条
  • [1] LES of flow in a low pressure turbine with incoming wakes
    Michelassi, V
    Wissink, J
    Rodi, W
    HIGH PERFORMANCE COMPUTING IN SCIENCE AND ENGINEERING '02, 2003, : 335 - 346
  • [2] Analysis of DNS and LES of Flow in a Low Pressure Turbine Cascade with Incoming Wakes and Comparison with Experiments
    Vittorio Michelassi
    Jan Wissink
    Wolfgang Rodi
    Flow, Turbulence and Combustion, 2002, 69 : 295 - 329
  • [3] Analysis of DNS and LES of flow in a low pressure turbine cascade with incoming wakes and comparison with experiments
    Michelassi, V
    Wissink, J
    Rodi, W
    FLOW TURBULENCE AND COMBUSTION, 2002, 69 (3-4) : 295 - 330
  • [4] SURFACE PRESSURE AND HEAT-TRANSFER MEASUREMENTS IN A TURBINE CASCADE WITH UNSTEADY ONCOMING WAKES
    LIU, X
    RODI, W
    EXPERIMENTS IN FLUIDS, 1994, 17 (03) : 171 - 178
  • [5] Synchronizing Separation Flow Control With Unsteady Wakes in a Low-Pressure Turbine Cascade
    Bloxham, M.
    Reimann, D.
    Crapo, K.
    Pluim, J.
    Bons, J. P.
    JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME, 2009, 131 (02):
  • [6] CALCULATION OF UNSTEADY-FLOW AND HEAT-TRANSFER IN A TURBINE CASCADE SUBJECTED TO PERIODIC ONCOMING WAKES
    CHO, NH
    RODI, W
    SCHONUNG, B
    ZEITSCHRIFT FUR FLUGWISSENSCHAFTEN UND WELTRAUMFORSCHUNG, 1995, 19 (05): : 320 - 330
  • [7] The Application of Flow Control to an Aft-Loaded Low Pressure Turbine Cascade with Unsteady Wakes
    Bons, Jeffrey P.
    Pluim, Jon
    Gompertz, Kyle
    Bloxham, Matthew
    Clark, John P.
    PROCEEDINGS OF THE ASME TURBO EXPO 2008, VOL 6, PT A, 2008, : 1945 - 1957
  • [8] Synchronizing separation flow control with unsteady wakes in 21 low-pressure turbine cascade
    Bloxham, M.
    Reimann, D.
    Crapo, K.
    Pluim, J.
    Bons, J. P.
    PROCEEDINGS OF THE ASME TURBO EXPO 2007, VOL 4, PTS A AND B, 2007, : 1039 - 1050
  • [9] The Application of Flow Control to an Aft-Loaded Low Pressure Turbine Cascade With Unsteady Wakes
    Bons, Jeffrey P.
    Pluim, Jon
    Gompertz, Kyle
    Bloxham, Matthew
    JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME, 2012, 134 (03):
  • [10] DNS OF THE FLOW NEAR THE ENDWALL IN A LINEAR LOW PRESSURE TURBINE CASCADE WITH PERIODICALLY PASSING WAKES
    Koschichow, Denis
    Froehlich, Jochen
    Kirik, Ilker
    Niehuis, Reinhard
    PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2014, VOL 2D, 2014,
12345