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ALTERNATIVE STRATEGIES FOR MODELLING FLOW OVER IN-LINE TUBE BANKS

Hector Iacovides
Turbulence Mechanics Group, School of Mechanical, Aerospace and Civil Engineering. The University of Manchester, Manchester M13 9PL, U.K.

Brian E. Launder
School of Mechanical, Aerospace & Civil Engineering, The University of Manchester, PO Box 88, Manchester M60 1QD, UK

Dominique R. Laurence
Modelling and Simulation Centre, School of Mechanical, Aerospace and Civil Engineering, The University of Manchester, Manchester M13 9PL, UK; EDF R&D, Fluid mechanics, Energy and Environment, 78401 Chatou, France

Alastair West
Turbulence Mechanics Group, School of MACE, University of Manchester

Résumé

This paper reports alternative strategies for modelling turbulent flow and heat transfer around in-line tube banks. The suitability and accuracy of wall-resolved Large Eddy Simulation (LES) and Unsteady Reynolds-Averaged Navier Stokes (URANS) approaches are examined on generic square in-line tube banks, where experimental data are limited but available. Within the latter approach, both eddy-viscosity and Reynolds stress models have been tested. The assumption of flow periodicity in all three directions is investigated by varying the domain size.