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Old   April 16, 2008, 04:56
Default Help!
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Hello everybody, I am a PHD student at the moment and I need to make a program in FLUENT very fast, but I don't really know the UDF-s. Here is my 2D problem: there is a plane plaque with a length of 150mm and 1mm in thickness; the initial conditions are: - Plaque temperature: Tp (e.g.: 300K) - Fluid temperature: Tfe (e.g.: 295K) - Initial fluid speed: v=0m/s.

In order to make a cycle, I have to accomplish 4 stages:

- t=1: the temperature of the plaque increases uniformly in the whole plaque with 2K (e.g.: Tp = Tpinitial +2K = 302K);

- t=2: the fluid flows from left to right for a certain period of time t (e.g.: t=1s) with a speed v=0.2m/s. There is a temperature gradient that appears both in the fluid and in the material. The temperature of the fluid at the right end of the plaque is Tf = Tfs

- t=3: the fluid has again a speed v=0m/s and the plaque has her temperature diminished uniformly by 2K (the temperature gradient is preserved)

- t=4: the fluid flows along the plaque from right to left this time, with a temperature at the entry point Tfs (the same temperature as the ending point in stage 2) " end of cycle.

I know it's a little bit complicated, but I am really blocked at the moment. I am thanking you in advance for your help.
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