||November 24, 2006 19:58
Re: heat transfer in a box in ANSYS CFX 10
Thank you, I followed your advice. At present I've decided not to model the internal fluid region, so I've defined a separate domain for the internal regions and put there energy and transfer coefficient as boundary conditions. I've run a transient analysis and it seems to work. Now, I want to plot the cooling time for the insulator and see how it changes with the variation of thickness. I've noticed that in Tools->timestep selector I can only set initial and final time step, but for the intermediate steps? I'm sure there's an easy way to do this. The next problem for the model I've to analyze in future is a bit more complicated for me. I try to explain it: imagine my container with polyurethane enclosure, recovered by external aluminum panel. Inside I've a lot of components: most of them are sources of energy; neglecting radiation phenomenon, and within the hypotheses of pure convection, I 've to consider the presence of internal fluid, but is it really necessary to mesh it, creating a volume with "Fill" tool in ansys workbench? The parts inside are suspended, as they floated, so there's no contact with the internal walls. I've already tried to define such a geometry but without success: "Fill" tool give me errors, so it is not possible to build the internal fluid region this way. Can you help me? Thank you a lot.