Details
| Original language | English |
|---|---|
| Title of host publication | Turbomachinery |
| Subtitle of host publication | Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions |
| Publisher | American Society of Mechanical Engineers(ASME) |
| Number of pages | 11 |
| ISBN (electronic) | 9780791888070 |
| Publication status | Published - 28 Aug 2024 |
| Event | 69th ASME Turbo Expo 2024: Turbomachinery Technical Conference and Exposition, GT 2024 - London, United Kingdom (UK) Duration: 24 Jun 2024 → 28 Jun 2024 |
Publication series
| Name | Proceedings of the ASME Turbo Expo |
|---|---|
| Volume | 12C |
Abstract
The accurate modelling of secondary-flow dynamics is a key aspect of reliable performance predictions for turbomachinery. This is due to the effect of secondary flow on the aerofoil boundary layers, as well as the overall energy budget. In this paper, we assess the predictive performance of a vortex-reactive turbulence-model extension using integral performance data of a multi-stage compressor test rig. The model extension provides a more accurate prediction of multi-stage compressor characteristics, especially if cavities and squealer tips are considered. This is achieved by mitigating an underprediction of near-choke mass-flow rates, and of the total-pressure ratio and isentropic efficiency near stall. The analysis shows that this is achieved by affecting the formation and propagation of secondary flow.
Keywords
- axial compressor, rotational effects, secondary flow, Turbulence modelling
ASJC Scopus subject areas
- Engineering(all)
- General Engineering
Cite this
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Turbomachinery: Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions. American Society of Mechanical Engineers(ASME), 2024. V12CT32A051 (Proceedings of the ASME Turbo Expo; Vol. 12C).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Improved Compressor Performance Prediction Using a Vortex-Reactive Turbulence-Model Extension
AU - Mimic, Dajan
AU - Mahlstedt, Janek
AU - Herbst, Florian
N1 - Publisher Copyright: Copyright © 2024 by ASME.
PY - 2024/8/28
Y1 - 2024/8/28
N2 - The accurate modelling of secondary-flow dynamics is a key aspect of reliable performance predictions for turbomachinery. This is due to the effect of secondary flow on the aerofoil boundary layers, as well as the overall energy budget. In this paper, we assess the predictive performance of a vortex-reactive turbulence-model extension using integral performance data of a multi-stage compressor test rig. The model extension provides a more accurate prediction of multi-stage compressor characteristics, especially if cavities and squealer tips are considered. This is achieved by mitigating an underprediction of near-choke mass-flow rates, and of the total-pressure ratio and isentropic efficiency near stall. The analysis shows that this is achieved by affecting the formation and propagation of secondary flow.
AB - The accurate modelling of secondary-flow dynamics is a key aspect of reliable performance predictions for turbomachinery. This is due to the effect of secondary flow on the aerofoil boundary layers, as well as the overall energy budget. In this paper, we assess the predictive performance of a vortex-reactive turbulence-model extension using integral performance data of a multi-stage compressor test rig. The model extension provides a more accurate prediction of multi-stage compressor characteristics, especially if cavities and squealer tips are considered. This is achieved by mitigating an underprediction of near-choke mass-flow rates, and of the total-pressure ratio and isentropic efficiency near stall. The analysis shows that this is achieved by affecting the formation and propagation of secondary flow.
KW - axial compressor
KW - rotational effects
KW - secondary flow
KW - Turbulence modelling
UR - http://www.scopus.com/inward/record.url?scp=85204695299&partnerID=8YFLogxK
U2 - 10.1115/GT2024-129179
DO - 10.1115/GT2024-129179
M3 - Conference contribution
AN - SCOPUS:85204695299
T3 - Proceedings of the ASME Turbo Expo
BT - Turbomachinery
PB - American Society of Mechanical Engineers(ASME)
T2 - 69th ASME Turbo Expo 2024: Turbomachinery Technical Conference and Exposition, GT 2024
Y2 - 24 June 2024 through 28 June 2024
ER -