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residual vibration in nozzle and diffuser simulation |
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January 21, 2022, 04:20
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residual vibration in nozzle and diffuser simulation
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#1 |
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New Member
joomi lee
Join Date: Oct 2021
Posts: 3
Rep Power: 5  |
A nozzle and diffuser simulation are in progress.
nozzle.JPG residual is vibrate. residual vibration.JPG I'm using the k-w SST turbulence model, Courant number 0.7 and pressure-inlet condition. what is wrong?? and how to fix it?? help me..... :-( |
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January 21, 2022, 05:06
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#2 |
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Senior Member
Alexander
Join Date: Apr 2013
Posts: 2,363
Rep Power: 34 |
physics of that flow is not steady.
residuals oscillating is essential here. you may reduce residuals simulating in transient
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January 21, 2022, 15:05
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#3 |
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Senior Member
Lorenzo Galieti
Join Date: Mar 2018
Posts: 375
Rep Power: 12 |
Yes, personal experience, to converge this nozzle flow you need to run the unsteady solver.
You didn't make any blatant mistake so far |
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| Tags |
| diffuser, fluent, nozzle, residual, vibration |
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