Hello,

I work in thermal engineering, and use the zone method to compute heat
transfers by radiation. I'm looking for a tool that can compute the
surface-surface view factors for simple geometries, but also that can take
a participating media into account. Therefore, I'm also interested in
volume-surface and volume-volume view factors.

Is it easy to get these with Pov-Ray?

can somebody help?

Many thanks,

ol

oli### [at] enseminpl-nancyfr

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In article <web.408412e95fffbad9eed016b20@news.povray.org> , "Ol" 
<nomail@nomail> wrote:

> I work in thermal engineering, and use the zone method to compute heat
> transfers by radiation. I'm looking for a tool that can compute the
> surface-surface view factors for simple geometries, but also that can take
> a participating media into account. Therefore, I'm also interested in
> volume-surface and volume-volume view factors.
>
> Is it easy to get these with Pov-Ray?

POV-Ray is a ray-tracer.  It does not tessellate objects in order to render
them.  In general it is no help for your problem.

> can somebody help?

You will need some software to get you polygons as scene information.  You
can then turn those polygons into triangles and apply the heat transfer
equations.  The same math is actually used in the classical radiosity
computation, so you may also want to look for implementations of classical
radiosity.

    Thorsten

____________________________________________________
Thorsten Froehlich, Duisburg, Germany
e-mail: tho### [at] trfde

Visit POV-Ray on the web: http://mac.povray.org

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Ol wrote:
> Hello,
> 
> I work in thermal engineering, and use the zone method to compute heat
> transfers by radiation. I'm looking for a tool that can compute the
> surface-surface view factors for simple geometries, but also that can take
> a participating media into account. Therefore, I'm also interested in
> volume-surface and volume-volume view factors.
> 
> Is it easy to get these with Pov-Ray?

POV-Ray computes radiation transfer via monte-carlo integration.  Since 
it handles a lot of arbitrarily complicated geometries it should be 
obvious that it does not calculate form factors analytically.  AFAIK all 
  rendering programs that use form factor based methods rely on FEM 
based techniques and compute transfer between simple surface (or volume) 
elements.

Christoph

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