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simulation of free surface of stirred tank using vof |
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November 23, 2012, 02:35 |
simulation of free surface of stirred tank using vof
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Senior Member
Jamal Foroozesh
Join Date: Oct 2012
Location: Iran
Posts: 162
Rep Power: 13 |
Hi alls,
I want to simulate free surface of stirred tank. I've solved my problem but it seems that results are wrong. System should be stable after a period of time, but did not stable. I think thak I don’t do a part of problem. What should I do that I have not done? Step by step of my problem: Read msh file 1) Make grid interfaces (rotor-stator interface) 2) Set multiphase model to VOF with default parameters 3) Set K-E with default parameters 4) Copy water-liquid from materials database 5) Define Air as primary phase 6) Define water as secondary phase 7) Operating condition: active gravity and set -9.81 to Z, (0 0 26.5) as reference pressure location 8) Boundary condition: A) Rotor fluid: whether moving mesh or mrf , 200rpm B) Rest fluid: stationary C) Impeller: stationary D) Shaft: absolute rotational, 200rpm E) Top of tank: symmetry F) Tank walls: no slip 10) initialize, init with default parameters 11) Adapt/ region/ (Xmin=-12, Xmax=12) (Ymin=-12, Ymac=12) (Zmin=0, Zmax=21.5)/ mark 12) initialize/ patch/ volume fraction of water in marked zone is set to 1 13) all parameters of solution is default of fluent 14) time step=0.001 or 0.0001 15) iterate |
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