FLIP流体的”内聚力”和”粘附”(模拟小尺寸流体)Coherent and Adherent Fluids in Houdini (Simulating Small Scale Fluids)

FLIP流体的”内聚力”和”粘附”(模拟小尺寸流体)Coherent and Adherent Fluids in Houdini (Simulating Small Scale Fluids)

In a recent project i had to do a simulation of water film surface on a glass sphere. After struggling with naked houdini flip solver i’ve seen that “stick on collision” and native “surface tension” was not enough to simulate a small scale fluid.

I had to fake thin film surface with pop grains and delivered the shot but my curiosity got me going for a better solution.

On small scales, realistic fluid behavour depends on two key factors: cohesion (fluid particles sticking to each other) and adhesion (fluid particles sticking to other surfaces). I’ve already know that Alejandro Echeverry had a beautiful solution for surface tension so all i needed was adhesion.

Built on top of Alejandro Echeverry’s elegant surface tension solution (https://www.gridmarkets.com/alejandro-echeverry), I’ve built a dop system to simulate adhesion, so i could get that gripping behaviour in my fluids.

Thanks for watching.
在最近的一个项目中,我不得不在玻璃球体上模拟“水膜”。在与原始houdini的FLIP解算器挣扎之后,我意识到”stick on collision”和原生的”surface tension”不足以模拟小规模的液体。

我最终不得不使用pop grains来尽可能表现这种薄薄的水膜表面并交掉了这个镜头,但我的好奇心让我想要更好的解决方案。

在小尺寸FLIP上,真实的流体形态取决于两个关键因素:内聚力(流体颗粒彼此粘附)和粘附(流体颗粒粘附到其他表面)。我已经知道Alejandro Echeverry有一个不错的表面张力解决方案,所以我需要的是粘合力。

建立在Alejandro Echeverry优雅的表面张力解决方案(https://www.gridmarkets.com/alejandro-echeverry)之上,我已经构建了一个用于模拟粘附力的dop系统,从而可以在我的液体解算中得到这种“抓握”的形态。

谢谢观看。