Hopefully posting to the right group this time....

This version shows the detail better.

Mike

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Attachments:
Download 'closeup.avi.dat' (205 KB)

"Mike Hough" <nos### [at] nospamcom> wrote:
> Hopefully posting to the right group this time....
>
> This version shows the detail better.

That is indeed a much better view.  You can see on this one that it is the
wavelet turbulence, not just noise.  It doesn't quite look physically accurate
though.  The large scales are captured by the simulation and the small scales
are captured by the wavelet turbulence, but the medium-scale wavenumbers just
don't really seem to show up.  Only skimmed through the paper, but is it just a
matter of turning on larger-scale bands?  Either way, it's a great start though.
 I'm tempted to try that out.

 - Ricky

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I am not exactly sure how it works. I agree that it needs to be scaled 
somehow and perhaps randomized a little. The hardest part is trying to 
control the outcome of these simulations.

Mike

"triple_r" <nomail@nomail> wrote in message 
news:web.495a9e2bf5a7c43e2266be010@news.povray.org...
> "Mike Hough" <nos### [at] nospamcom> wrote:
>> Hopefully posting to the right group this time....
>>
>> This version shows the detail better.
>
> That is indeed a much better view.  You can see on this one that it is the
> wavelet turbulence, not just noise.  It doesn't quite look physically 
> accurate
> though.  The large scales are captured by the simulation and the small 
> scales
> are captured by the wavelet turbulence, but the medium-scale wavenumbers 
> just
> don't really seem to show up.  Only skimmed through the paper, but is it 
> just a
> matter of turning on larger-scale bands?  Either way, it's a great start 
> though.
> I'm tempted to try that out.
>
> - Ricky
>

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Hiya Mike, always good to see you here at the POV-Ray newsgroups. Saw you 
were posting plenty of stuff-- seems so when I go plowing through reading 
and looking. By the time I stop to write something I'm too exhausted to 
think after scanning a hundred or more messages in under half hour each 
time.
For example, I was always going to say something about Samuel's jasper 
mineral rendering from months ago and never got back to it. He keeps putting 
something new out there so often I can't keep up, or Ive slowed way down. 
Probably both.

I got a look at your tropical moonlit scene using this volcanic plume. 
Already forgetting how it compares to this earlier one. I watched this 
animation loop many times and I got to thinking it might not be a dense 
enough ash cloud. I would expect the edges to be as opaque as the central 
part. That's probably why I kept seeing it as more of a smoky thing than 
ash, that and the fast rate of flow casues me to see it as smaller than 
maybe otherwise intended to be. Makes me think of high-speed video of a 
chaotic eruption because I see it as a very large mountain.

Always some great stuff being done so I wanted to stop and say so once 
again.

Bob

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Thanks Bob. Just saw your post today as I tend to forget about posts after 
awhile.

Know what you mean about responding to posts. I like looking at the images 
on these newsgroup but usually can't think of anything to say other than 
"cool." I had a long break from work about a month ago and it gave me a 
chance to get back into using POV-Ray again. Unfortunately things are 
getting really busy again so the hobbies have to be put on hold again. That 
said I probably won't be doing anything more with these smoke 
simulators...simply to much work and it is really difficult to control the 
result.

Mike


"Bob Hughes" <omniverse charter net> wrote in message 
news:496eed0a@news.povray.org...
> Hiya Mike, always good to see you here at the POV-Ray newsgroups. Saw you 
> were posting plenty of stuff-- seems so when I go plowing through reading 
> and looking. By the time I stop to write something I'm too exhausted to 
> think after scanning a hundred or more messages in under half hour each 
> time.
> For example, I was always going to say something about Samuel's jasper 
> mineral rendering from months ago and never got back to it. He keeps 
> putting something new out there so often I can't keep up, or Ive slowed 
> way down. Probably both.
>
> I got a look at your tropical moonlit scene using this volcanic plume. 
> Already forgetting how it compares to this earlier one. I watched this 
> animation loop many times and I got to thinking it might not be a dense 
> enough ash cloud. I would expect the edges to be as opaque as the central 
> part. That's probably why I kept seeing it as more of a smoky thing than 
> ash, that and the fast rate of flow casues me to see it as smaller than 
> maybe otherwise intended to be. Makes me think of high-speed video of a 
> chaotic eruption because I see it as a very large mountain.
>
> Always some great stuff being done so I wanted to stop and say so once 
> again.
>
> Bob
>

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"Mike Hough" <nos### [at] nospamcom> wrote in message 
news:498f973e@news.povray.org...
> Thanks Bob. Just saw your post today as I tend to forget about posts after 
> awhile.

And I just saw this and thought it was from tonight not last night, so 
stopping here during another quick read/look here to say that. Much the same 
way, I usually need time to think on something before I write so I end up 
skipping along through the messages. I'm certain to read and see at least 
half the stuff going on anyhow.

> Know what you mean about responding to posts. I like looking at the images 
> on these newsgroup but usually can't think of anything to say other than 
> "cool." I had a long break from work about a month ago and it gave me a 
> chance to get back into using POV-Ray again. Unfortunately things are 
> getting really busy again so the hobbies have to be put on hold again. 
> That said I probably won't be doing anything more with these smoke 
> simulators...simply to much work and it is really difficult to control the 
> result.

Should be fun, yeah, or better than doing nothing. Maybe like me your chores 
at home get left undone to make time for the fun things.

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