文章详细信息 关键词： 水平集法;;泡沫流动;;气液界面;;数值模拟 [gap=1239]Keywords: level set method;foam flow;gas-liquid interface;numerical simulation
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第2和第3节分别简要介绍单位分解法和水平集法；
The partition of unity method (PUM) and Level Set Method (LSM) are briefly introduced in sections 2 and 3, respectively.
我们是知道如何去求水平集的法向量的，也就是垂直于水平集的法向量。
And we know how to find a normal vector to the level set, namely the gradient vector is always perpendicular to the level set.
在引入模糊优化理论的基础上，建立了齿轮的模糊优化数学模型，采用两级模糊综合评判和最优水平截集法，将其转化为常规的优化模型。
Based on the fuzzy optimal theory, the model of gear fuzzy optimum design is set up. With fuzzy comprehensive evaluation and optimal cut set, the model is transformed to general optimization.
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