E-epsilon modelling of turbulent air flow downwind of a model forest edge

被引：164

作者：

Liu, J ^{[1
]}

Chen, JM ^{[1
]}

Black, TA ^{[1
]}

Novak, MD ^{[1
]}

机构：

[1] UNIV BRITISH COLUMBIA,DEPT SOIL SCI,VANCOUVER,BC V6T 1Z4,CANADA

来源：

BOUNDARY-LAYER METEOROLOGY | 1996年 / 77卷 / 01期

关键词：

D O I：

10.1007/BF00121857

中图分类号：

P4 [大气科学（气象学）];

学科分类号：

0706 ; 070601 ;

摘要：

A two-dimensional E - epsilon model, which included the effects of plant-atmosphere interaction, was used to simulate air flow downwind of forest edges for the purpose of predicting the microclimate in forest openings. A suitable set of wall functions was selected to consider the aerodynamic effects of the ground in the opening. The model with discretization and parameter schemes was validated using a set of data from a wind-tunnel experiment. The simulated wind speed and turbulence kinetic energy closely agreed with the measured values. After validation, the model was used to predict eddy diffusivity in the lee of the forest edge. The modelled spatial distribution of the eddy diffusivity agreed in general with that calculated using wind-tunnel measurements. The usefulness and limitations of the E - epsilon model are discussed.

引用

页码：21 / 44

页数：24

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