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大气科学  2003 

大风条件下城市冠层流场模拟

DOI: 10.3878/j.issn.1006-9895.2003.02.12

Keywords: 城市冠层,有效空气体积比,形式阻力

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Abstract:

发展了基于k-ε湍流闭合方法的城市冠层流场模式,建筑群采用多孔介质来表示,对气流的阻力以形式阻力来描述,采用该模式模拟北京市一个小区的流场,并将模拟结果与北京325m气象塔观测资料进行比较,结果表明:在大风情况下,计算风廓线与观测拟合风廓线比较吻合.该模式可以用于大风条件下城市冠层流场的模拟.

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