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中文摘要：
应用Fluent计算软件,采用VOF方法对坡面薄层流进行自由表面追踪,结合标准k-ε紊流模型模拟了不同粗糙度床面条件下流速、雷诺数、弗汝德数以及阻力系数的沿程变化,并验证了数值模拟方法的正确性。结果表明,数值模拟方法具有可行性,坡面薄层水流表面张力作用不可忽略。
英文摘要：
The volume of fluid（VOF） method was used to track the free surface of hillslope sheet flow, and flow velocity, Reynolds number, Froude number and resistance coefficient of air-water multiphase flow under different degress of roughness bed were simulated combined with standard k-ε turbulent model using fluent calculation software. The correctness of the numerical simulation method was verified. The results indicated that the method of numerical simulation was feasible and the effect of hillslope sheet flow surface tension could not be ignored.
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