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Sixth International Symposium on Turbulence and Shear Flow Phenomena
June, 22-24, 2009 , Seoul National University, Seoul, Korea

DOI: 10.1615/TSFP6

EFFECTS OF A PERIODIC SURFACE TEMPERATURE OSCILLATION ON STRATIFIED TURBULENCE IN A CHANNEL FLOW

pages 477-480
DOI: 10.1615/TSFP6.750
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Краткое описание

Thermally stratified shear turbulent channel flow with temperature oscillation on the bottom wall has been investigated by large eddy simulation (LES) approach coupled with dynamic subgrid-scale (SGS) models. The objective of this study is to deal with the influence of the temperature oscillation on characteristics of thermally stratified turbulent flow and to examine the effectiveness of the LES technique on predicting unsteady turbulent flow driven by time-varying buoyancy force. The phase-averaged velocities and temperature, and some typical instantaneous flow structures at different Richardson numbers and periods of the oscillation are analyzed.

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