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Registered: ‎03-31-2014
Accepted Solution

Heat Flux Profile

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03-31-2014 11:36 AM

Hello All,

I am working on project for a concentrated solar power application.  I am looking for a method of specifying a heat flux distribution, or profile, across a single surface.  Meaning, the magnitude of the heat flux varies (non-linearly) with position at the heat input surface.  Is this possible to do with Autodesk Simulation CFD?

 

Thanks,
DP

Dan Pounds
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Registered: ‎08-31-2011

Re: Heat Flux Profile

04-02-2014 08:10 AM in reply to: dpounds9999

No method of specifying a flux gradient

The only method would be to manually split the surface in to smaller surfaces and then to assign respective Fluxes to each subset to create the gradient

Member
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Re: Heat Flux Profile

04-03-2014 06:33 AM in reply to: apolo.vanderberg

This is what I feared.  For a Gaussian distribution like function, the slope can be very steep near the peak and therefore can be quite painful to discretize.  I have a put in a suggestion to the idea forum to include a way to define a vertex and a function that would define the heat flux as a function of position, possibly with definite bounds.

Dan Pounds
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Registered: ‎01-18-2006

Re: Heat Flux Profile

04-03-2014 06:45 AM in reply to: dpounds9999

An interesting application.  Off the cuff suggestion - If your problem is not transient, perhaps modeling a thin layer of highly conductive material between your parts and where you apply the heat flux will smooth out the distribution - this will allow you to use fewer regions and still achive a more continuous near-gaussian profile, instead of a stepwise one.

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Re: Heat Flux Profile

04-08-2014 05:22 AM in reply to: dpounds9999

While the approach of breaking up the surface into discrete regions is a valid approach, it can be a painful approach depending on the situation.  Please note that I have accepted this as a solution but I have also put in a request in the idea forum to incorporate an option to define a spatial function.  Thanks.

Dan Pounds