Details for A Closure Approach With Multi-Scale Mixing Length, and its Application to Wind and Shear Stress...
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A Closure Approach With Multi-Scale Mixing Length, and its Application to Wind and Shear Stress...
- Date Added:
- 11/15/2011
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- A Closure Approach With Multi-Scale Mixing Length, and its Application to Wind and Shear Stress...
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- 11/15/2011 09:59
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A method to determine flow specific first-order closure for the turbulent flux of momentum in the atmospheric boundary layer (ABL) is presented. This is based on the premise that eddy viscosity is a flowrather than a fluid property, and the physically more realistic assumption that the transfer of momentum and other scalar quantities in a turbulent flowtakes place by a large, but finite number of length scales, than the often used single length scale, the ‘mixing length’. The resulting eddy viscosity is flow specific and when applied to the study of the ABL, yields the vertical profiles of shear stress and mean wind velocity in good agreement with observations.