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http://dx.doi.org/10.3741/JKWRA.2011.44.3.189

Comparative Study on k-ε and k-ω Closures under the Condition of Turbulent Oscillatory Boundary Layer Flow at High Reynolds Number  

Son, Min-Woo (Ocean Science Technology Institute, Inha Univ.)
Lee, Guan-Hong (Dept. of Oceanography, Inha Univ.)
Lee, Kil-Seong (Dept. of Civil and Envir. Engrg., Seoul National Univ.)
Lee, Du-Han (River, Coastal and Harbor Research Devision, KICT)
Publication Information
Journal of Korea Water Resources Association / v.44, no.3, 2011 , pp. 189-198 More about this Journal
Abstract
The aim of this study is to compare k-$\varepsilon$ and k-$\omega$ closures under the condition of oscillatory layer flow at high Reynolds number. A one dimensional vertical model incorporated with flow momentum equations and turbulence models (k-$\varepsilon$ and k-$\omega$) is applied to the laboratory measurements in the turbulent oscillatory boundary layer. The numerical simulation reveals that both turbulence models calculate similar velocity profiles and turbulent kinetic energy (TKE). In addition, both deliver high accuracy under the condition of negligible spanwise pressure gradient. Therefore, it is recommended in this study to use k-$\varepsilon$ closure, of which numerical coefficients have been calibrated from many studies, for the cases of straight channel, estuary, and coastal environment where the spanwise pressure gradient is not significant.
Keywords
oscillatory boundary layer; k-$\varepsilon$; k-$\omega$; turbulent kinetic energy; pressure gradient;
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Times Cited By KSCI : 1  (Citation Analysis)
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