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August 28, 2021, 08:11 |
Pseudo transient settings
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#1 |
Member
Adithya
Join Date: May 2021
Posts: 73
Rep Power: 4 |
Hello
I have questions about the pseudo transient method and could not find the needed recommendation in other threads or in the manual. I have a geometry of an aircraft that i am simulating on fluent with the SA model and inlet turbulence conditions set as per the recommendations of spalart and rumsey. My solution diverges with negative nut for the fine mesh with yplus<1 but works with the coarse mesh with first cell height in the log=law layer. I run the coupled scheme but i have left the pseudo transient settings as default. What is the effect of reducing the time scale from 1? Is it recommended to reduce it to 1e-4 for example? Should i leave it at automatic method or specify it as user defined? Similarly, what are the recommendations for the length scale? |
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