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Assessment of LES techniques for mitigating the Grey Area in DDES models

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Pont Vilchez, ArnauMés informació
Santos Serrano, DanielMés informacióMés informació
Trias Miquel, Francesc XavierMés informacióMés informacióMés informació
Duben, Alexey
Revell, Alistair
Oliva Llena, AsensioMés informacióMés informacióMés informació
Document typeConference report
Defense date2019
Rights accessOpen Access
All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder
ProjectALGORITMOS NUMERICOS AVANZADOS PARA LA MEJORA DE LA EFICIENCIA ENERGETICA EN LOS SECTORES EOLICO Y SOLAR-TERMICO: DESARROLLO%2FADAPTACION A NUEVAS ARQUITECTURAS COMPUTACIONALES (AEI-ENE2017-88697-R)
Abstract
The slow RANS-LES transition is a well-known shortcoming in hybrid turbulence models such as DelayedDetached Eddy Simulation (DDES). The present work assesses the feasibility of 2D sensitive LES models for naturally triggering turbulence, rather than using the specifically designed techniques available in the literature. This research has been carried out with OpenFOAM, which has been used for simulating the flow in a Backward-Facing Step configuration. The results have been compared with a DNS data set, showing the good mitigation capabilities of such LES techniques. Nevertheless, other cases should be studied before extracting any relevant conclusion.
CitationPont, A. [et al.]. Assessment of LES techniques for mitigating the Grey Area in DDES models. A: European Conference for Aeronautics and Space Sciences. "8th European Conference for Aeronautics and Space Science (EUCASS): Madrid, Spain: 1-4 July 2019: proceedings online". 2019, p. 1-8. 
URIhttp://hdl.handle.net/2117/187373
Publisher versionhttps://www.eucass.eu/index.php/component/docindexer/?task=download&id=5599
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