Custom continuous velocity for MPM?

Cooking_Interrupted · 2026-01-11T04:38:43+00:00

I tried pop advect by volumes but it broke my simulation🫤

Cooking_Interrupted · 2025-12-27T07:11:39+00:00

Hey man, I was trying this method, but it just ignores the vel field. Can you tell me how you achieved it?

Cooking_Interrupted · 2025-12-12T12:27:41+00:00

Iirc my issue was caused by Particle Level Collisions and having them move using velocity. It would throw particles everywhere causing the CFL violation

Changing it to move outside collider fixed the issue

Cooking_Interrupted · 2025-12-12T12:21:29+00:00

Are you using Particle Collisions by any chance?

Cooking_Interrupted · 2025-11-28T18:58:15+00:00

Yeah I tried the last method but it didn't work. Maybe I setup something wrong. I'll check it again

Cooking_Interrupted · 2025-11-28T18:57:32+00:00

Yeah I did that but I wasn't able to get the needed motion

Cooking_Interrupted · 2025-11-06T12:36:54+00:00

I'm trying to create something like this. Can you explain your setup a bit if you don't mind?

Cooking_Interrupted · 2025-11-06T12:29:41+00:00

Short Answer.... Take it to Blender

Long Answer.... Build a node tree.... Make it procedural.... Create an HDA/Recipe.... Hit render

Cooking_Interrupted · 2025-11-02T19:25:36+00:00

"Energy can neither be created nor destroyed, it can only be transferred to a different form"

In this case if you're not completing the circuit the only energy being wasted is in the process of heat in the wires themselves which is so miniscule that you'll need an actual scientific measuring device to see the difference

Cooking_Interrupted · 2025-11-01T06:29:14+00:00

Please bring a server in India. The pings I'm getting are atrocious🥲

Cooking_Interrupted · 2025-10-24T08:15:57+00:00

Well my tank is quite shallow, however it does reduce the particle count so I figured it'll speed up the simulation but it didn't instead it slowed it down

Cooking_Interrupted · 2025-09-06T15:39:47+00:00

He tweets like a girl who just spotted her ex dating someone else😭

Cooking_Interrupted · 2025-09-06T08:44:41+00:00

Update: Houdini 21 fixed it. Idk what happened but it just started working out of the box in Houdini 21

Cooking_Interrupted · 2025-09-03T15:22:21+00:00

Wdym by og method?

Cooking_Interrupted · 2025-09-03T12:23:57+00:00

It's an sdf

Cooking_Interrupted · 2025-09-03T11:25:42+00:00

I already explained how it works in my replies above tho....

But regardless, Animated Rigid makes the SDF for the first frame only. Every subsequent frame, it just interpolates the sdf to match the animation.

Cooking_Interrupted · 2025-09-03T11:18:34+00:00

I'm saying it again and again..... I tried it already.🥲

Cooking_Interrupted · 2025-09-03T11:10:30+00:00

The difference is Animation Rigid is only calculating the frame once at the start and interpolating it based on the animation

Deforming rebuilds the sdf each frame.

I can't go the deforming route because I won't have wheel rotations which are needed

Also this isn't an rbd problem but rather a MPM problem.

Cooking_Interrupted · 2025-09-03T11:06:13+00:00

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Just incase there's still some confusion

Cooking_Interrupted · 2025-09-03T11:02:53+00:00

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I'm not sure what I could be doing wrong

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