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Vellum Playground - 10 - Mixing Vellum Fluids - Part 1: Fluid Simulation (Patreon)

Published:
2023-04-14 07:56:41
Imported:
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In episode 10 we will dive deep into the refreshing coolness of mixing fluids using Vellum.

In Part 1 we will set up the Vellum fluid simulation and mix two fluids with different attributes.

Content

  • 00:00 - Introduction
  • 01:04 - Project file content
  • 02:39 - Set up Vellum fluids
  • 08:23 - Simulation setup in DOPs
  • 12:55 - Adding forces to the simulation
  • 16:48 - Fluid mixing using a Multi-Solver
  • 21:54 - Caching the simulation
  • 24:47 - Outro

Files

Comments

Anonymous

Hello. Fantastic tutorial. Is it possible to have the emitter emit fluid at the bottom of the object and the fluid expands from the bottom up? I know that divergence can do it with standard flip fluids in Houdini, I'm not sure how to do it with Vellum. Any suggestions?

graphicinmotion
>>108636605

Thanks, Byron! You can just place the emitter at the bottom of the object and it will fill it up. If it´s too slow increase the "Particle Density" on the Velum Source Object.

Anonymous

Hi. I tried that and it doesn't work. I was told on another forum that you can't. Do you have better results? That would be great.

graphicinmotion
>>108649811

You can place the emitter inside the object, but you cannot emit from the bottom of the object, so from the object geometry directly, if that is what you mean.

Anonymous

If a place the emitter near bottom of the container, the level of the liquid will not rise above the emitter. If I raise the emitter higher in the container, the water level will rise only to the position of the emitter. With regular flip fluids you must use divergence to get the fluid to rise above the emitter when the emitter is inside the fluid. I was trying to find a workaround for vellum. If you are saying that it IS possible, I must have something wrong in my setup. I'll try again to see if it works using your exact setup, but moving the emitters to the bottom of the container instead, The result should show the fluid rising to the top.

graphicinmotion
>>108654455

You have to increase „Particle Density“ on the Vellum Source object in the DOP network. That worked for me.

Anonymous

Thank you so much.... I really appreciate your help. Looking forward to more tutorials... Easily the best Houdini Tutorial I've seen.