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Simulations of heat transfer in a boundary layer subject to free-stream turbulence

Författare:	Li, Q., Schlatter, P., Henningson, D.S.H.
Dokumenttyp:	Konferens
Tillstånd:	Publicerad
Tidskrift:	Turbulence and Shear Flow Phenomena - 6
Volym:	I 195-200
År:	2009

Abstract

The present study investigates the effects of the ambient free-stream turbulence (FST) on the momentum and heat transfer in a turbulent flat-plate boundary layer via large-eddy simulations (LES) using the ADM-RT model. Due to a FST of 20%, the skin-friction coefficient cf and Stanton number St are substantially elevated up to 15% in the fully turbulent region. The depression of both the mean velocity and temperature profiles in the wake region due to the FST is observed, however, the influence on the wall-normal heat flux in the near-wall region is negligible.