I am currently working on a thermal analysis for a satellite in ANSYS. I have been able to generate the satellites thermal flux that it will receive from the suns, earths, moons, etc radiations. I have this working through matlab code to determine heat flux for all sides of the satellite.
My question comes in when applying radiation to the problem using ANSYS mechanical. I have tried applying surface to ambient radiation on the outer surfaces of the satellite, with an ambient temperature of 4K. This resulted in a steady temperature drop, even in direct sunlight... which doesn't make sense.
I figured maybe there must be an issue with having heat flux and radiation to ambient on the same surfaces. Is this true, or should this not be an issue for ANSYS?
so I turned off ambient radiation into space,
I then applied interior surface to surface radiation, with an emissivity of .96 and an ambient temperature of 4K. This gave me some results that seemed similar to other satellite analysis' I have seen.
My main question comes when I am trying to apply a temperature controlled heater. This is to simulate the heater for the battery, turn on when the temperature is at 0 C and turn off when it hits 5 C. I have found some code that seems to simulate a heater, but I am having trouble figuring out the code... which nodes are checking for temp, and basically how to understand the code.http://my.fit.edu/itresources/manuals/fluent14/help/ans_vm/Hlp_V_VM159TXT.html
here is the link I have to the heater example, if you can help me that would be great! Thanks!