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Amg solver x-momentum problem

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Old   April 20, 2014, 10:54
Smile Amg solver x-momentum problem
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Hi, my name is Lucas and Im learing how to use fluent. My teacher gave to us a mesh and all the step-by-step to solve the problem, but when i calculate, appear that error:

Error: Divergence detected in AMG solver: x-momentum
Error Object: #f

I read another posts about it, but i didnt solve it yet. I dont know where i find "under relaxation factor" to reduce (one solution that a saw).

So, could someone help me and explain step-by-step to solve this problem?

Thanks
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Old   April 21, 2014, 09:51
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shoeb khan
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Quote:
Originally Posted by lucascluz92 View Post
Hi, my name is Lucas and Im learing how to use fluent. My teacher gave to us a mesh and all the step-by-step to solve the problem, but when i calculate, appear that error:

Error: Divergence detected in AMG solver: x-momentum
Error Object: #f

I read another posts about it, but i didnt solve it yet. I dont know where i find "under relaxation factor" to reduce (one solution that a saw).

So, could someone help me and explain step-by-step to solve this problem?

Thanks
Dear Lucas

Kindly explain your problem, then i may suggest you something.

Regards
shk
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Old   April 23, 2014, 17:17
Default Problem explanation
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My problem is 2D, transient,axisymmetric. I have to analyze the oil cooling process along the tube. I have the temperatures in each wall of the tube and all proprieties of the oil. I have to simulate 10 hours, so i put my time step 100 and number of time steps 360, to get 36000 seconds (10 hours). So, I put all this parameters on Fluent, but appear that error said above. Which parameters I have to change to solve this problem and run the program correctly?

Sorry about my bad explanation
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