南华大学学报（自然科学版）Issue(2)：22-25,4.
铀矿山下垫面粗糙度对大气风场影响的数值模拟研究
Numerical Simulation Research on Air Flow Field Influenced by Uranium Mine Underlying Surface Roughness
摘要
Abstract
Based on N-S equation,uranium mine physical model was built and CFD meth-ods were used to attain the air flow field under three surface roughness conditions ( z=0 . 1 m,z=0. 5 m,z=1. 0 m). Numerical results show that the surface wind speed change be-tween two surface roughnesses is 19% with the roughness increasing. When the height is increased to 200 m,the effect of roughness is diminishing and the wind field contour line tends to be stable. The effect of the roughness to wind field near the ground is becoming more evident with the increase of wind speed. Raising the exhaust height could enhance the transport capacity in order to reduce local pollution level under the conditions of higher surface roughness (z≥0. 5 m).关键词
铀矿山/大气风场/粗糙度/数值模拟Key words
Uranium mine/air flow field/surface roughness/numerical simulation分类
天文与地球科学引用本文复制引用
谢东,莫顺权,王赟..铀矿山下垫面粗糙度对大气风场影响的数值模拟研究[J].南华大学学报（自然科学版）,2014,(2):22-25,4.基金项目
国家自然科学基金资助项目(11105068) （11105068）
湖南省自然科学基金资助项目(14JJ3100) （14JJ3100）
