FLIP制作小规模流体:模拟粘性和吸附Coherent and Adherent Fluids in Houdini

FLIP制作小规模流体:模拟粘性和吸附Coherent and Adherent Fluids in Houdini

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 (gridmarkets.com/alejandro-echeverry), I’ve built a dop system to simulate adhesion, so i could get that gripping behaviour in my fluids.
You can purchase the file from gum.co/Oejcb
Thanks for watching.
谷歌翻译:
在最近的项目中,我不得不模拟玻璃球上的水膜表面。在用裸露的houdini翻转解算器苦苦挣扎之后,我发现“粘在碰撞上”和固有的“表面张力”不足以模拟小规模的流体。
我不得不伪造带有爆米花的薄膜表面,然后进行拍摄,但是我的好奇心促使我寻求更好的解决方案。
在小规模上,实际的流体行为取决于两个关键因素:内聚力(流体颗粒彼此粘附)和粘附力(流体颗粒粘附至其他表面)。我已经知道亚历杭德罗·埃切弗里(Alejandro Echeverry)对于表面张力有很好的解决方案,所以我需要的只是附着力。
我建立在Alejandro Echeverry优雅的表面张力解决方案(gridmarkets.com/alejandro-echeverry)的基础上,我构建了一个可以模拟附着力的dop系统,因此我可以在液体中获得这种抓地力。

不幸的是,FLIP流体并不是小规模流体的最佳解决方案。 该设置为FLIP引入了增强的粘附力(流体与表面相互作用)和内聚力(流体与流体相互作用)。

通过此设置,您将能够非常正确地模拟小规模流体。

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Chen Jing
Chen Jing
6 月 之前

这个文件为什么只有流体和一只猪的碰撞呢? 那个小球的没有