vented enclosure heat transfer
vented enclosure heat transfer
(OP)
Hi all, new to the forum and heat transfer problems in general. I have a 3"diameter, 3" tall electronics enclosure that will be mounted on the end of a DC motor. I know how much heat the motor will put into the enclosure's bottom and also know the heat generated by a few of the enclosed electronic components (FETs). The enclosure has several holes - thus it is not sealed. My quest is to find the resulting temperature of a few of the enclosed components. I have the FEA tools - but not CFD. My primary question is how to simulate the enclosed air. I am tempted to treat all internal and external surfaces with natural convection but worry that I may not be capturing the effect of any "trapped heat". This type of problem is outside my comfort zone so would appreciate any inputs.
Thanks
Thanks





RE: vented enclosure heat transfer
So now what are you trying to figure out? Are you looking at the internal components as generating heat and not as regions of trapped heat? are you trying to figure out the escaping air temperature or the surface temperature of the electronic components?
RE: vented enclosure heat transfer
A worst case approximation might be to consider all the vents plugged. In that case there is interior convection of the trapped air. How is that typically handled in a heat transfer FEA?