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Found 9 results

1. Solar Radiation Modeling in AcuConsole

Dear Experts, I have a solar panel, which consists of different layers (solids). The panel is exposed to a irradiance of 800 W/m^2 from straight above: I have a question regarding the definition of the surfaces under Solar Radiation Surface (Default, Inward, Outward, Both Sides) for the case shown above. If I define all surfaces (side-, top & bottom surfaces and also surfaces between different layers) as DEFAULT, I get the following results in Hyperview for the solar flux: If I define all surfaces as BOTH SIDES, I get the following results in Hyperview for the solar flux: How can I decide which option is the right for my usecase to model the physics correctly. Furthermore, what exactly is designated with solar_heat_flux in Hyperview? Is it the radiation intensity or another quantity? And what are the "best" options for Solar Radiation Parameters for num.rays, num. diffuse sub rays, max. ray reflections, min.ray energy? Thanks in advance!

Dear Experts, I am currrently carrying out thermal analysis in AcuConsole on a photovoltaic panel composed of five different layers (Glass cover, encapsulant, silicium cell, encapsulant, Backsheet). I want to consider thermal radiation on the front& back surface of my PV panel according to the following equations for the front and back surface, respectively: . I read in the AcuConsole training manual that calculation of radiation is only possible from surfaces of fluid mediums but I have no fluid in my simulation setup. Therefore my questions are: 1.) Is there any other possibility to implement radiation without a fluid volume (i.e. setting heat flux (boundary condition) to -100 W/m^2 on the corresponding surface)? 2.) The equations above are dependent on a value which has to be calculated by the processor (Trear and Tfront). Is it possible to formulate such boundary conditions that depend on values that will be calculated later by the processor (AcuSolve)? Thanks in advance!
3. What is 'Enclosure model' for radiation? Is it the same as S2S model?

Having had to use the radiation model in Acuconsole, I want able to find any info on the 'enclosure model' for radiation. Is it the same as S2S model. Any info on the matter would be great. Thank you.

Hi I am trying to perform a (transient) thermal analysis where a composite plate is subjected to radiation. The plate consists of 2 plies, the one on top is made of glass, the one on the bottom is made of aluminium. The radiation needs to go trough the glass and then reaches the aluminium plate. The aluminium absorbs almost all of the radiation, the glass mainly lets the radiation trough and reflects it. How would I model this? Is it possible to do a thermal simulation like this with hyperworks software, like optistruct or radioss? I already looked at the tutorials but they don't match my case. I also tried acusolve but here it is not possible either because radiation through glass cannot be simulated properly.

6. Radiation only to a certain surface

Hi, I am performing research for a thermal radiation CFD simulation. The simulation is the following: A plate is locally heated by a laserbeam. So my question is: would it be possible to only apply radiation on this single spot? How would I do this in AcuConsole? I have done a greenhouse simulation already with radiation heat but than the radiation hit the complete model. So is it possible to only locally apply radiation in a model? Thank you in advance Toon