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Adaptive grid threshold - Printable Version

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+--- Thread: Adaptive grid threshold (/showthread.php?tid=1760)



Adaptive grid threshold - keithb - 09-21-2016

Hello
I'm struggling somewhat with this...whatever values I put into the threshold, the grid expands massively within a few frames. Even if I put it up to 99 and the velocity values are tiny, the grid just gets bigger. I look at the values using the numeric output, and they are in the range 0 to 2, yet the threshold seems not to ignore those voxels.
Any help appreciated, my sim times are going through the roof, even though there is nothing inside those voxels.

Thanks


Re: Adaptive grid threshold - keithb - 09-21-2016

here is an image of what I mean

[Image: fume_vels2.jpg]


Re: Adaptive grid threshold - sitnisati - 09-21-2016

Hello,

I'd say that some sim parameter is off the charts and generates extreme velocities, but can't tell.
You can try simulation with a Simple Source and see if the same happens.

Regards,
Kresimir Tkalcec


Re: Adaptive grid threshold - keithb - 09-22-2016

Is there any chance I can send a scene for you to look at?
I simply cannot get the adaptive grid to work whatever I try.
I think I must be missing something fundamental.

Thanks


Re: Adaptive grid threshold - sitnisati - 09-22-2016

Hello,

Yes, please send the scene so we can examine it.

Thank you.

Kresimir Tkalcec


Re: Adaptive grid threshold - keithb - 09-22-2016

hmm I think I got this working...I scaled the fume grid down to .1. I think this was messing with the values, even though the sim itself was working.
I take it scaling the grid is a no no ?


Re: Adaptive grid threshold - sitnisati - 09-23-2016

Hello,

It would be very helpful to see the original scene to see what was the cause for this.

Thank you.

Kresimir Tkalcec


Re: Adaptive grid threshold - keithb - 09-23-2016

Yes I'll send a scene whwn I have moment.