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中国沙漠  2014 

风沙运动的欧拉双流体模型参数研究

DOI: 10.7522/j.issn.1000-694X.2014.00010

Keywords: 欧拉双流体模型,动力黏度,动量交换系数,碰撞恢复系数,输沙率

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Abstract:

利用数值方法研究了双流体模型中动力黏度μs,kin、动量交换系数β和碰撞恢复系数ess对风沙运动的影响.结果显示:动力黏度μs,kin影响沙床面起沙率,动量交换系数β影响输沙率沿流程的变化,碰撞恢复系数ess影响输沙量的垂向分布.利用研究得到的参数,模拟风沙流运动,并与已有的诸多实验和数值模拟结果对比,结果吻合较好,说明该参数的选取可以有效地模拟风沙流运动.

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