Large-Eddy Simulation of Heat Transfer Around a Square Cylinder Using Unstructured Grids

Autor:	Matthieu Boileau, Florent Duchaine, Jean-Christophe Jouhaud, Y. Sommerer
Rok vydání:	2013
Předmět:	Engineering Convective heat transfer business.industry Turbulence Aerospace Engineering Mechanical engineering Reynolds number Mechanics Computational fluid dynamics Vortex shedding Unstructured grid Physics::Fluid Dynamics symbols.namesake Heat transfer symbols business Large eddy simulation
Zdroj:	AIAA Journal. 51:372-385
ISSN:	1533-385X 0001-1452
DOI:	10.2514/1.j051800
Popis:	This paper presents a method of large-eddy simulation on unstructured grids designed to predict the wall heat transfer in typical aeronautical applications featuring turbulent flows and complex geometries. Two types of wall treatments are considered: a wall-function model using a full tetrahedral grid and a wall-resolved method computed on a hybrid tetrahedral–prismatic grid. These two approaches are tested against the square-cylinder case at moderate Reynolds number (Re=22,050), in which many reference data are available for flow dynamics and heat transfer. Both predict accurately the unsteady flow around the cylinder and in its near wake, but only the wall-resolved approach reproduces the Nusselt-number global value and its spatial distribution around the cylinder wall. This latter method is used to investigate the coupling between periodic vortex shedding and wall heat transfer using a phase-averaged analysis.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6b5a7b3a8c58468440d88329038c4824 https://doi.org/10.2514/1.j051800 Zobrazit plný text záznamu