Strange pixelation in Fire

[ABC123]

Hey all,

I'm getting some strange pixelation issues in my fire render. I was playing with various settings all night yesterday. I'd love to get past this part and start working on the look of it. Has anyone ran into something like this before?

To give you an idea of scale, the model is 25cm.

I would attach a .hip file but I'm using a bgeo cache for some elements, including the fluid source.

 

Thanks for any help in advance

Edited August 5, 2017 by ABC123

[Yon]

Hey ehhhm I think ur really far off

u should first scale ur scene at least x50 cuz H doesn't work in cm especially pyro

the pixels are simply cuz ur resolution is very low so divide division size on pyro object like / 4 or something 

[ABC123]

5 minutes ago, Yon Anadeyo said:

Hey ehhhm I think ur really far off

u should first scale ur scene at least x50 cuz H doesn't work in cm especially pyro

the pixels are simply cuz ur resolution is very low so divide division size on pyro object like / 4 or something 

Ok thanks, I'll give that a try. The reason why it's so small is because I camera tracked a scene with an object about 25cm / 0.25m so the scale is accurate in Houdini. So I should scale it up some? Won't that affect the way the pyro simulates the same way it does with other simulations, making them appear slower in a smaller scene? 

 

[Stephen Moroz]

On 8/6/2017 at 3:27 AM, ABC123 said:

Ok thanks, I'll give that a try. The reason why it's so small is because I camera tracked a scene with an object about 25cm / 0.25m so the scale is accurate in Houdini. So I should scale it up some? Won't that affect the way the pyro simulates the same way it does with other simulations, making them appear slower in a smaller scene? 

 

I'm having a very similar problem at the moment, trying to do a very small scale pyro sim. I've set mine up to correct scene scale (1unit = 1m) but I've been having problems getting the smoke to simulate correctly at such a small scale. However I'm also worried that scaling everything up will cause the smoke to look incorrect (too slow, as you say). Did you work out a solution in the end?