伽利略不变性
- 网络Galilean Invariance
伽利略不变性-
LBM继承了LGA完全并行、边界条件容易实现、易于编程等优点的同时又去除了诸如统计噪声、压强依赖于流体速度、不满足伽利略不变性等缺陷。
LBM inherits the LGA completely parallel , the boundary conditions easy to implement , easy to program , etc. In addition , while gone , such as statistical noise , the pressure depends on the fluid velocity does not satisfy the Galilean invariance and other defects .
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结果表明，外场趋于使生长表面平滑并且不破坏伽利略不变性。
The result shows that the external field tends to smoothen the interface and does not break the Galilean invariance .
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常规自由能模型不能满足伽利略不变性，在模拟气泡运动时，圆形气泡往往会变为椭圆形；
The conventional free-energy models are not Galilean invariant and the circular bubble will always become elliptical .