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On the relative impact of subgrid-scale modelling and conjugate heat transfer in LES of hot jets in cross-flow over cold plates

Hallez, Yannick and Jouhaud, Jean-Christophe and Poinsot, Thierry On the relative impact of subgrid-scale modelling and conjugate heat transfer in LES of hot jets in cross-flow over cold plates. (2011) International Journal for Numerical Methods in Fluids . ISSN 1097-0363

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Official URL: http://dx.doi.org/10.1002/fld.2613

Abstract

This work describes numerical simulations of a hot jet in cross-flow with applications to anti-ice systems of aircraft engine nacelles. Numerical results are compared with experimental measurements obtained at ONERA to evaluate the performances of LES in this industrial context. The combination of complex geometries requiring unstructured meshes and high Reynolds number does not allow the resolution of boundary layers so that wall models must be employed. In this framework, the relative influence of subgrid-scale modelling and conjugate heat transfer in LESs of aerothermal flows is evaluated. After a general overview of the transverse jet simulation results, a LES coupled with a heat transfer solver in the walls is used to show that thermal boundary conditions at the wall have more influence on the results than subgrid scale models. Coupling fluid flow and heat transfer in solids simulations is the only method to specify their respective thermal boundary conditions.

Item Type:Article
Additional Information:Thanks to John Wiley editor. The definitive version is available at http://onlinelibrary.wiley.com/ The original PDF of the article can be found at International Journal for Numerical Methods in Fluids website : http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1097-0363
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
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Deposited By: Yannick Hallez
Deposited On:16 Jun 2011 09:36

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