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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

MODELLING HIGH SCHMIDT NUMBER TURBULENT SCALAR TRANSPORT ACROSS AIR-WATER INTERFACES

pages 545-550
DOI: 10.1615/TSFP6.870
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ABSTRAKT

An extended version of the analytical wall-function (AWF) is presented for solving mass transfer fields across air-water interfaces. By considering exact near-surface limiting profiles of turbulence quantities such as the eddy viscosity and the turbulent scalar ux, the prescribed turbulent diffusivity profile, which is a core assumption of the AWF, is modelled to have the correct limiting behaviour. The resultant AWF performs well to predict turbulent concentration flelds under air-water interfaces at the Schmidt numbers of 1 ≤ Sc ≤ 1000.

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