Urgent Please Help, Cosmos FloWorks 2004, Heattransfer Probl

The first thing I would do is a simple problem. Maybe a box open on both ends with a heat source inside and flow through it.

Use the tools in FW to check the total mass flow into and out of the case as well as pressures at inlets and outlets.

Is you answer converged?

What is the temperature of the inside walls of the case?

You have done well to recognize that the answer doesn't make sense. You will have to be systematic in eliminating possible causes. FW should have no problem giving a reasonable answer to this problem.

actualy the results do not look to bad. The low tempratures i wa seeing where in solver.

and they are different from what happens when I finally see the fna

results when i load the

it gets to a 'steady state' fluid temp, which is running at about 12

degrees F. which is very good, because while my fan specs are no prefect yet, just doing thermal anaylis on the system using a contro volume, and steady state analyis, keeping air standrards, fixin pressure, and Mdotin = Mdotout. I fixed my states to be 110 degrees in, and 120 degrees out. (this i from math

Floworks, gives me a fluid temp fof 123 degrees at solid state

thanks

so my question is, the numbers that are shown in solver, how do the relate to the final result

This relates to the question, "Is your answer converged?"

When watching the solver you are looking at an unconverged answer.

I believe FW has a setting which controls the "quality" of the answer. You know you have a converged answer (usually) when the difference between one run and another at the next higher step is very small (a few percent.)

FW and any other CFD system has to iterate to find an answer.

ok I have to add, that upon close inspection the fluid temp does g below 110 Degrees F in a few small areas of the fluid. What i do not see is how to set the air temp to be a constant 110 coming in, in the wizard I see that I can set the inital condition to be at 110 F, and the solids to be 110 F. But no where do I se the opition to set the fulid coming in to be 110 degrees. It seem that it defaults to the 68 degrees for the temp, and then builds i back up

after its all done, I can insert a boundary temp to 110 degress, bu thats only in the result