Estimates of velocity-pressure and velocity-pressure gradient interactions in the surface layer over plant canopies |
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| Authors: | T Maitani T Seo |
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| Institution: | (1) Institute for Agricultural and Biological Sciences, Okayama University, Kurashiki, Japan |
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| Abstract: | The budget equations of turbulent kinetic energy and shear stress contain interaction terms of velocity-pressure and velocity-pressure gradient. These terms were estimated in the surface layer using the air pressure observed at the surface and wind velocity components over plant canopies. The magnitude of the pressure interaction terms was significantly large; it was not negligible compared with the production terms in each budget equation. The present results obtained over a rough surface also confirmed previous results that pressure terms play an important role in the turbulent kinetic energy budgets and the shear stress budget. The height dependency of nondimensional pressure terms versus (z - d)/z
0 was not clear. |
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