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Linear solver fails only in the last iteration |
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January 16, 2014, 07:52 |
Linear solver fails only in the last iteration
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#1 |
Senior Member
Govindaraju
Join Date: Apr 2010
Posts: 209
Rep Power: 17 |
Dear all
I am simulating a pulsatile flow through curved pipe. The duration of the cycle is 1s. I am running the simulation for 4 cycles. time step I assigned is 0.01s. So 100 iteration is required to complete a cycle. During this cycle the velocity increases to maximum and become zero. in solver W momentum, v momentum shows "F' at 99 th iteration 199th, 299th and 399 iterations.( I use smooth transition inflation) If I use first layer inflation the solver fails from the beginning. Need your advice please. Thank you Govind |
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January 16, 2014, 08:11 |
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#2 |
Senior Member
Lance
Join Date: Mar 2009
Posts: 669
Rep Power: 22 |
Pulsatile flow and it fails at the end of each pulse? Im guessing there is something wrong with your boundary conditions. But since you havent provided us with enough information, that is all I can say...
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January 16, 2014, 20:51 |
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#3 | |
Senior Member
Govindaraju
Join Date: Apr 2010
Posts: 209
Rep Power: 17 |
Quote:
I use SST turbulence model. Thanks Govind |
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January 17, 2014, 03:37 |
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#4 | ||
Senior Member
Lance
Join Date: Mar 2009
Posts: 669
Rep Power: 22 |
Quote:
Quote:
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