CUED Publications database

Zonal RANS-LES modeling for turbines in aeroengines

Tucker, P and Jefferson-Loveday, R and Tyacke, J and Nagabhushana Rao, V (2012) Zonal RANS-LES modeling for turbines in aeroengines. Computational Thermal Sciences, 4. pp. 497-506. ISSN 1940-2503

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The cost of large-eddy simulation (LES) modeling in various zones of gas turbine aeroengines is outlined. This high cost clearly demonstrates the need to perform hybrid Reynolds-averaged Navier-Stokes-LES (RANS-LES) over the majority of engine zones because the Reynolds number is too high for pure LES. The RANS layer is used to cover over the fine streaks found in the inner part of the boundary layer. The hybrid strategy is applied to various engine zones, which is shown to typically give much greater predictive accuracy than pure RANS simulations. However, the cost estimates show that the RANS layer should be disposed within the low-pressure turbine zone. Also, the nature of the flow physics in this zone makes LES most sensible. © 2012 by Begell House, Inc.

Item Type: Article
Divisions: Div A > Fluid Mechanics
Div A > Turbomachinery
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:25
Last Modified: 31 Aug 2021 07:12
DOI: 10.1615/ComputThermalScien.2012006402