A modified form of the turbulent energy model for geophysical flows is presented, in which the effect of the proximity of the ground on the pressure redistribution terms is accounted for. The new form of the model retains the simplicity and the capabilities ofthe original form, but at the same time
A turbulent energy model for geophysical flows
✍ Scribed by S. Hassid; B. Galperin
- Publisher
- Springer
- Year
- 1983
- Tongue
- English
- Weight
- 908 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0006-8314
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✦ Synopsis
A simple turbulent flow model for geophysical flows is presented, which is based on the transport equation for turbulent energy and on algebraic expressions relating the Reynolds stress and turbulent heat flux to the velocity and temperature gradients. The model, which is similar to the 2.5 level closure model of Mellor and Yamada, includes constraints based on the realizability conditions as well as expressions for the length scale which account for the influence of stratification and the Coriolis acceleration. The model is shown to reproduce satisfactorily the main features ofexisting laboratory measurements of stress-induced and convective turbulent entrainment in stratified flows. * Senior Lecturer. ** Research Fellow.
📜 SIMILAR VOLUMES
A nonlinear stress±strain model, derived from the modeled Reynolds stress transport equation, is modi®ed to account for the near wall eects in wall-bounded turbulent ¯ows. Since it is known that wall re¯ection of the turbulent pressure ®eld modi®es the pressure±strain correlation, the approach taken