Details
| Original language | English |
|---|---|
| Article number | ijtpp3030018 |
| Journal | International Journal of Turbomachinery, Propulsion and Power |
| Volume | 3 |
| Issue number | 3 |
| Publication status | Published - 2 Jul 2018 |
Abstract
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-w + g-ReQ) 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.
Keywords
- Boundary layer transition, Computational fluid dynamics, Turbulence and transition modeling
ASJC Scopus subject areas
- Engineering(all)
- Mechanical Engineering
- Engineering(all)
- Aerospace Engineering
- Energy(all)
- Energy Engineering and Power Technology
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In: International Journal of Turbomachinery, Propulsion and Power, Vol. 3, No. 3, ijtpp3030018, 02.07.2018.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Improved Turbulence Prediction in Turbomachinery Flows and the Effect on Three-Dimensional Boundary Layer Transition
AU - Bode, Christoph
AU - Friedrichs, Jens
AU - Frieling, Dominik
AU - Herbst, Florian
N1 - Funding Information: Funding: Financial support from the German Federal Ministry of Economic Affairs and Energy is gratefully acknowledged for funding of the ECOFLEX-Turbo project (Grant: 03ET7091X). The project is also part of the research alliance MOBILISE, which is a cooperation between University of Braunschweig and Leibniz University of Hannover.
PY - 2018/7/2
Y1 - 2018/7/2
N2 - 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-w + g-ReQ) 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.
AB - 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-w + g-ReQ) 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.
KW - Boundary layer transition
KW - Computational fluid dynamics
KW - Turbulence and transition modeling
UR - http://www.scopus.com/inward/record.url?scp=85063492867&partnerID=8YFLogxK
U2 - 10.3390/ijtpp3030018
DO - 10.3390/ijtpp3030018
M3 - Article
AN - SCOPUS:85063492867
VL - 3
JO - International Journal of Turbomachinery, Propulsion and Power
JF - International Journal of Turbomachinery, Propulsion and Power
IS - 3
M1 - ijtpp3030018
ER -