Then for some reason I stopped the simulation at 1...
# incompressiblel
Lookid
03/02/2023, 7:45 PMThen for some reason I stopped the simulation at 1000 timesteps and restarted it, and pouf, the magU problems are back. The restart made something wrong
k
kandelabr
03/02/2023, 7:47 PMcan you draw the component of U that's aligned with the pipe
kandelabr
03/02/2023, 7:47 PMthis way you could see if there's a recirculation of some kind at the inlet
kandelabr
03/02/2023, 7:47 PM(happened to me already)
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Lookid
03/02/2023, 7:47 PMboth at 1000 timesteps, seriously 😄
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kandelabr
03/02/2023, 7:48 PMI suspect you use SST, low-Re mesh and 2nd order schemes for turbulence
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Lookid
03/02/2023, 7:49 PMk-eps, wall functions and first order lol
Lookid
03/02/2023, 7:49 PMnot but it really is the mesh
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otaolafr
03/02/2023, 7:49 PMHow the geometry looks?
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Lookid
03/02/2023, 7:50 PMI ran it before very very similar, geometry changed just a little little
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kandelabr
03/02/2023, 7:50 PMwell this can't be the problem, eh? 😄
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Lookid
03/02/2023, 7:51 PMLookid
03/02/2023, 7:51 PMlook at this
Lookid
03/02/2023, 7:51 PMI had that for the case before which just had a few degrees less of non ortho
Lookid
03/02/2023, 7:52 PMthe rest was strictly the same
Lookid
03/02/2023, 7:52 PMtypical pump with your 7 domains
Lookid
03/02/2023, 7:56 PMno problemo now, surfaceLIC at inlet pipe. I had messy stuff with the hexa mesh though
Lookid
03/02/2023, 8:00 PManyway ye I stop complaining and I'll go fix my mesh
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kandelabr
03/02/2023, 8:01 PMI don't think 76 degree should be that bad
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Lookid
03/02/2023, 8:16 PMThe results are making sense
Lookid
03/02/2023, 8:17 PMIt just doest converge, p is stuck at 0.03 0.04, magU too big and wavy head. But it's still reasonable
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kandelabr
03/02/2023, 8:29 PMall my simulations behave like that (except velocity at inlet), a pump just isn't a steady-state thingy
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Lookid
03/02/2023, 8:40 PMYes I know but I somehow got such a nice convergence for my first polyhedral mesh that I thought it's the new norm with those
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otaolafr
03/03/2023, 4:42 PMthe poly you made it using cfmesh, polyDual or other mesher?
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Lookid
03/03/2023, 5:42 PMANSA at work
Lookid
03/03/2023, 8:16 PMfixed the mesh, but still have some troubles. I'm just gonna live with it 🙂