COMPUTATION OF A NON-ISOTHERMAL COMPLEX GEOMETRY FLOW USING NON-LINEAR URANS AND ZONAL LES MODELLING

Yan Liu
Fluid Dynamics Research Centre, The University of Warwick Coventry,CV4 7AI, UK

Paul G. Tucker
Fluid Dynamics Research Centre, School of Engineering, The University of Warwick, Coventry; Whittle laboratory, University of Cambridge, UK

Alex Jouvray
Fluid Dynamics Research Centre, The University of Warwick Coventry,CV4 7AI, UK

Peter W. Carpenter
Fluid Dynamics Research Centre, The University of Warwick Coventry,CV4 7AI, UK

Аннотация

Non-isothermal Unsteady Reynolds Averaged Navier-Stokes (URANS) and Zonal k−l based Large Eddy Simulations (ZLES) for a complex geometry flow are presented. The URANS models investigated include a high Reynolds number Explicit Algebraic Stress Model (EASM) and a full Reynolds Stress Model (RSM). The results demonstrate that overall the ZLES perfoms slightly better than URANS for the flow field. However, for heat transfer predictions, curently ZLES does not perform well. This needs to be further explored.