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Help with 2d mesh with complex curve (fluent)

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Old   January 29, 2021, 15:40
Exclamation Help with 2d mesh with complex curve (fluent)
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Lucas Lima
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Good morning CFD online, i've been trying to simulate the performance of a rocket combustion chamber+nozzle, but unfortunely the simulation always tend to make the resiuduals jump after (90-500itr), so i assume this is due to the mesh quality, since the nothing seems to fix it.

im almost sure this instabilities derive from a certain spot on the mesh, more precisely where the converging part of the nozzle starts:

https://www.cfd-online.com/Forums/at...1&d=1611949127

i cannot find any information on how to reduce this section's skewness.

Looking forward to fix this issue !
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2d., mesh and fluent, mesh angle, skewed cells


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