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December 1, 2016, 03:39 |
gravity on or off?
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#1 |
Senior Member
SinaJ
Join Date: Nov 2009
Posts: 136
Rep Power: 16 |
I'm dealing with a big geometry (internal flow), in which the vertical distance from bottom to the top is around 50m. It's single phase and surrounded by walls.
My only concern is that since I'm doing a particle tracking on it, I need to apply the gravitational force on the particles for that purpose. Should I apply Gravity during the fluid flow iterations or not? The convergence with gravity-off is nice! with gravity-on the convergence is not easily achievable (still I can get something), but the streamlines look weird and there are many incomplete streamlines! PS: I'm using realizable k-e with scalable wall function. |
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December 1, 2016, 05:07 |
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#2 | |
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Onur Özcan
Join Date: Feb 2016
Location: Istanbul/Turkey
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December 1, 2016, 07:55 |
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#3 | |
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December 1, 2016, 12:56 |
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#4 |
Senior Member
SinaJ
Join Date: Nov 2009
Posts: 136
Rep Power: 16 |
It's a single-phase water flow through a huge internal system. and I'm trying to see the rate of sedimentation of solid particles in that. I was wondering that maybe I can solve the fluid first (with no gravity), and then activate the gravity and try the DPM-particle tracking.
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December 1, 2016, 12:58 |
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#5 | |
Senior Member
SinaJ
Join Date: Nov 2009
Posts: 136
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