THE SCALAR BUDGET OF TURBULENCE FLOW ACROSS A FOREST EDGE: USING A LARGE EDDY SIMULATION (LES)

机译：森林边缘湍流的标度预算：使用大涡模拟（LES）

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The outputs from our LES demonstrate that strong horizontal and vertical advection of scalar make important contribution to the scalar budget at a forest transition, where turbulence flux contribution is weak because the turbulent motion from upstream is suppressed by the forest stand. The vertical eddy flux term reaches an equilibrium value at about 10 canopy heights downwind from edge, where advection terms become negligible. A fetch factor of at least 10, in this case, is needed if solely relying on eddy flux measurements.

机译：我们的LES的输出表明，在森林过渡时期，标量的强烈水平和垂直对流对标量预算做出了重要贡献，在该森林过渡中，湍流通量的贡献很弱，因为上游的湍流运动被林分抑制了。垂直涡流项在距边缘顺风处约10个冠层高度处达到平衡值，其中对流项可忽略不计。如果仅依靠涡流测量，则在这种情况下至少需要10的提取因子。

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来源
《25th Conference on Agricultural and Forest Meteorology and 12th Joint Conference on the Applications of Air Pollution Meteorology with Aamp;WMA and Fourth Symposium on the Urban Environment May 20-24, 2002 Norfolk, Virginia》|2002年|p.A117-A118|共2页
会议地点 Norfolk WV(US);Norfolk WV(US);Norfolk WV(US)
作者
Nanami Momma; Roger H. Shaw; Kyaw Tha Paw U; Bai Yang;
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Univ. of California, Dept. of Land, Air, Water Resources, Davis, CA 95616;

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原文格式 PDF
正文语种 eng
中图分类农业基础科学;
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3. Large Eddy Simulation of Passive Scalar in Complex Turbulence with Flow Impingement and Flow Separation [J] . Ken-ichi ABE, Kazuhiko SUGA 日本機械学会論文集. B編 . 1999,第632期

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4. THE SCALAR BUDGET OF TURBULENCE FLOW ACROSS A FOREST EDGE: USING A LARGE EDDY SIMULATION (LES) [C] . Nanami Momma, Roger H. Shaw, Kyaw Tha Paw U, Conference on agricultural and forest meteorology . 2002

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5. Large eddy simulation of turbulent flow across a forest edge. [D] . Yang, Bai. 2003

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THE SCALAR BUDGET OF TURBULENCE FLOW ACROSS A FOREST EDGE: USING A LARGE EDDY SIMULATION (LES)

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