Filling 15ft of tubing with liquid.

[james_robertson]

I am working on an animation showing cement being dumped into an oil well.

There is about 15ft of tubing (8 inch diameter) that needs to fill with fluid from a deployment tool that allows fluid to flow in upon moving a sleeve. A plug at the bottom of the tubing stops the fluid from flowing downwards and it gradually fills up back up towards the deployment tool

I'm very happy with how everything looks but the problem is that I get about 200 frames into the simulation and it seems to grind to a halt,. (at this point the cache files are about 150mb each)

If anyone has any tips on how best to approach this type of scenario it would be appreciated.

I have attached some pics of what I have done so far

[georgi.zhekov]

Hello,

What do you mean by "the simulation seems to grind to a halt" - the simulation gets too slow or that the liquid is not filling the empty space anymore?

Which version of Phoenix are you using?

The first thing to try here is to make sure that your geometry is clean and shelled (no single face open geometry) - if your run STL check modifier over it - there should be no errors (no overlapping faces, no open edges, etc).

If the geometry has some problems - the simulation might be problematic as well.

If the sim gets too slow - maybe you can reduce the grid resolution or the steps per frame.

If the liquid is not filling up the empty space - probably you need to fix the geometry or increase the Scene scale in the Grid rollout or increase the Steps per frame.

[james_robertson]

Hi Georgi

Looking at the details of the cache files its not actually stopping but the time to generate each frame / file is over two hours. All the fluids are behaving as expected, it is filling nicely but just very slowly.

I just wondered if there was any way of optimising the scene of if there was a recommended technique . Its max 2025 and the latest version of Vray and Phoenix.

[georgi.zhekov]

Can you show us your settings? 2 hours a frame sounds really slow.

The Simulation Speed rollout in the Simulator can give you detailed breakdown on which part of the sim took the longest and suggest some tips on what you can optimize.

Thanks!

[james_robertson]

Hi Georgi, I worked out the problem, I had several very high resolution meshes in the scene, once I removed them from the simulation its went from 2 hours per frame to 3 minutes which is great.

Even though these meshes didn't actually have any contact with the fluids it still seems to have put up the render time.

Thanks for your help