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Turbulent measurements in the stable atmospheric boundary layer during SHEBA: ten years after

Grachev A., Landreas E., Fairall C., Guest P., Persson P.

Acta Geophysica

2008

Vol. 56, no. 1

142-166

This paper surveys results of the comprehensive turbulent measurements in the stable boundary layer (SBL) made over the Arctic pack ice during the Surface Heat Budget of the Arctic Ocean experiment (SHEBA) in the Beaufort Gyre from October 1997 through September 1998. Turbulent fluxes and mean meteorological data were continuously measured and reported hourly at five levels on a 20-m main SHEBA tower. Eleven months of measurements during SHEBA cover a wide range of stability conditions, from the weakly unstable regime to very stable stratification, and allow studying the SBL in detail. A brief overview of the SBL regimes, the fluxprofile relationships, the turbulent Prandtl number, and other parameters obtained during SHEBA is given. The traditional Monin-Obukhov approach, z-less scaling, and gradient-based scaling are evaluated and discussed based on the data from SHEBA.

A Turbulent heat flux two-equation [formula] closure based on the V2F turbulence model

Karcz M., Badur J.

TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk

2003

Vol. 7, No 3

375-387

The paper deals with the proposition of a two-equation turbulent heat flux closure without any damping function. The model has been based on Durbin's V2F dynamic turbulence closure and the Deng-Wu-Xi thermal turbulence model. Both models have been implemented into the FLUENT code by a User Defined Function. Results of numerical computation have been compared with experimental data for developing a thermal field in a pipe by Nagano and DNS heat transfer prediction for a two-dimensional channel flow by Kasagi.