Improved Turbulence Prediction in Turbomachinery Flows and the Effect on Three-Dimensional Boundary Layer Transition

被引：2

作者：

Bode, Christoph ^{[1
]}

Friedrichs, Jens ^{[1
]}

Frieling, Dominik ^{[2
]}

Herbst, Florian ^{[2
]}

机构：

[1] Tech Univ Carolo Wilhelmina Braunschweig, Inst Jet Prop & Turbomachinery, D-38108 Braunschweig, Germany

[2] Leibniz Univ Hannover, Inst Turbomachinery & Fluid Dynam, D-30167 Hannover, Germany

来源：

INTERNATIONAL JOURNAL OF TURBOMACHINERY PROPULSION AND POWER | 2018年 / 3卷 / 03期

关键词：

computational fluid dynamics; turbulence and transition modeling; boundary layer transition;

D O I：

10.3390/ijtpp3030018

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

For the numerical prediction of turbomachinery flows, a two-equation turbulence model in combination with a proper transition model to account for laminar boundary layers and their transition to turbulence is state of the art. This paper presents the ability of such a method (k-omega + gamma -Re-Theta) for turbulence prediction and the effect on three-dimensional boundary layer behavior. For this purpose, both applied models (turbulence and transition) are improved to better account for turbulence length scale effects and three-dimensional transition prediction (Bode et al., 2014 and 2016), since these are the main deficiencies in predicting such kinds of flows. The improved numerical method is validated and tested on existing turbine cascades with detailed experimental data for the viscous regions and additionally on a low-speed axial compressor rig where wake-induced transition takes place.

引用

页数：13

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