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

页码：643 / 650

页数：8

共 50 条

[21] The Influence of Different Wake Profiles on Losses in a Low Pressure Turbine Cascade
Hammer, Florian
Sandham, Neil D.
Sandberg, Richard D.
INTERNATIONAL JOURNAL OF TURBOMACHINERY PROPULSION AND POWER, 2018, 3 (02)
[22] The effect of endwall boundary layer and incoming wakes on secondary flow in a high-lift low-pressure turbine cascade at low Reynolds number
Qu, Xiao
Zhang, Yanfeng
Lu, Xingen
Lei, Zhijun
Zhu, Junqiang
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING, 2019, 233 (15) : 5637 - 5649
[23] LES of wake-blade interference in a low-pressure turbine
Raverdy, B.
Mary, I.
Sagaut, P.
Roux, J. M.
Direct and Large-Eddy Simulation V, Proceedings, 2004, 9 : 627 - 634
[24] LES of background fluctuations interacting with periodically incoming wakes in a turbine cascade
Wissink, Jan
Rodi, Wolfgang
DIRECT AND LARGE-EDDY SIMULATION VI, 2006, 10 : 609 - +
[25] Large-Eddy Simulation of Low-Pressure Turbine Cascade with Unsteady Wakes
Robison, Zachary
Gross, Andreas
AEROSPACE, 2021, 8 (07)
[26] Comparative numerical investigation of wake effect on low-pressure turbine endwall flow
Robison, Zachary
Gross, Andreas
AEROSPACE SCIENCE AND TECHNOLOGY, 2022, 131
[27] RECOGNITION OF STRUCTURES LEADING TO TRANSITION IN A LOW PRESSURE TURBINE CASCADE: EFFECT OF REDUCED FREQUENCY
Lengani, D.
Simoni, D.
Ubaldi, M.
Zunino, P.
Bertini, F.
PROCEEDINGS OF THE ASME TURBO EXPO: TURBOMACHINERY TECHNICAL CONFERENCE AND EXPOSITION, 2019, VOL 2A, 2019,
[28] Numerical Investigation of Wakes on Endwall Unsteady Flow Inside Low Pressure Turbine
Sun S.
Zhang Z.-Y.
Zuo C.-L.
Wu X.-S.
Pan S.-R.
Liu F.-L.
Tuijin Jishu/Journal of Propulsion Technology, 2022, 43 (01): : 138 - 145
[29] GENERATION AND DEVELOPMENT OF KLEBANOFF STREAKS IN LOW-PRESSURE TURBINE CASCADE UNDER UPSTREAM WAKES
Sun, Shuang
Wu, Xingshuang
Tan, Tianrong
Zuo, Canlin
Pan, Sirui
Liu, Fulin
PROCEEDINGS OF THE ASME TURBO EXPO 2020: TURBOMACHINERY TECHNICAL CONFERENCE AND EXPOSITION, VOL 2E, PT I, 2020,
[30] On the Periodically Unsteady Interaction of Wakes, Secondary Flow Development, and Boundary Layer Flow in An Annular Low-Pressure Turbine Cascade: An Experimental Investigation
Sinkwitz, Martin
Winhart, Benjamin
Engelmann, David
di Mare, Francesca
Mailach, Ronald
JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME, 2019, 141 (09):

← 1 2 3 4 5 →