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rlguy / Blender-FLIP-Fluids

The FLIP Fluids addon is a tool that helps you set up, run, and render high quality liquid fluid effects all within Blender, the free and open source 3D creation suite.
https://www.blendermarket.com/products/flipfluids
GNU General Public License v3.0
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Export Fluid Data #411

Closed YvHalder closed 5 years ago

YvHalder commented 5 years ago

Hi,

I was wondering if it is possible to export flow quantities (pressures and velocities on the grid) at every timestep? I could not find anywhere how to do this or if this is even possible.

Thanks in advance.

rlguy commented 5 years ago

Hi YvHalder,

There is no functionality to export this kind of data in the addon. Is there a specific use case where this data would be useful to you? Is there a way that this data can be used in Blender?

- Ryan

YvHalder commented 5 years ago

Hi YvHalder,

There is no functionality to export this kind of data in the addon. Is there a specific use case where this data would be useful to you? Is there a way that this data can be used in Blender?

  • Ryan

I would like to use the addon for a scientific application regarding machine learning. The idea is to enhance low-fidelity fluid simulations by training a neural network on high-fidelity simulation data. Therefore I need to be able to extract fluid quantities from the simulations performed in Blender (which can be considered as low-fidelity simulations) :)

rlguy commented 5 years ago

Sounds like an interesting application! I am sorry to say that we will likely not be adding this functionality to the addon due to its limited use in Blender. We're focusing on developing features that can be used within Blender.

Are you familiar with C++ programming and compiling? If so, I would be glad to point you to areas of the code where velocity and pressure grid data can be accessed.

If you're looking for a simulation system with functionality for accessing this type of data, Houdini might be something to look into. There is a lot of customizability for what type of data to save to the cache.

rlguy commented 5 years ago

I will be closing this issue. If you have any further questions, feel free to comment or send us an email at flip.fluids@gmail.com.