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May 15, 2010, 17:23 |
axisymmetric case
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#1 |
New Member
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I'm trying to simulate a simple problem - current in a pipe of constant diameter. Tried manually and using the utility makeAxialMesh to create axis-symmetric case. After start simpleFoam solver there are deduced data for 3 vector components.
Time = 201 DILUPBiCG: Solving for Ux, Initial residual = 0.000588805, Final residual = 1.64506e-07, No Iterations 2 DILUPBiCG: Solving for Uy, Initial residual = 0.00149572, Final residual = 5.55529e-07, No Iterations 2 DILUPBiCG: Solving for Uz, Initial residual = 0.00907859, Final residual = 3.0994e-06, No Iterations 2 GAMG: Solving for p, Initial residual = 0.00423031, Final residual = 4.10437e-06, No Iterations 19 GAMG: Solving for p, Initial residual = 4.08028e-06, Final residual = 9.36491e-08, No Iterations 20 GAMG: Solving for p, Initial residual = 9.36482e-08, Final residual = 9.36482e-08, No Iterations 0 time step continuity errors : sum local = 7.21952e-10, global = -5.79737e-12, cumulative = -5.79737e-12 DILUPBiCG: Solving for omega, Initial residual = 0.000178982, Final residual = 3.51317e-06, No Iterations 1 DILUPBiCG: Solving for k, Initial residual = 0.00106769, Final residual = 2.67984e-06, No Iterations 2 ExecutionTime = 3.3 s ClockTime = 5 s As I understand the project should be quasi-two-dimensional. That is two components should be deduced only. Even, if display data of 3 components it is normal for an axis-symmetric of projects, there is one more problem - the component of velocity Uz for quasi-empty dimension most worse to converge. What to do? Last edited by Svensson; June 5, 2010 at 09:34. Reason: axisymmetric case |
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May 16, 2010, 12:40 |
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#2 |
Senior Member
Sebastian Gatzka
Join Date: Mar 2009
Location: Frankfurt, Germany
Posts: 729
Rep Power: 20 |
Well, I'm not sure what your exact problem is ...
Can you be more specific?
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May 17, 2010, 04:21 |
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#3 |
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Anton Kidess
Join Date: May 2009
Location: Germany
Posts: 1,377
Rep Power: 29 |
It is normal that all three components are still displayed, as the grid is still 3D (just with special cells and boundary conditions). And about Uz: Is it maybe possible that you mixed up X and Z direction during mesh generation (so that Y and Z span your computational plane and X is normal to the side of the wedge)? Did you look at your mesh in paraview to make sure everything is correct?
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May 17, 2010, 15:29 |
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#4 |
New Member
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Can look and prompt why badly to converge quasi-empty component of velocity Uz. Here the project:
http://rapidshare.com/files/38847831...in_tube.tar.gz Last edited by Svensson; May 18, 2010 at 07:35. |
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May 20, 2010, 12:35 |
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#5 |
New Member
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Well all right, then can, somebody even to show a correct ready example stationary axial-symmetric flow?
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May 21, 2010, 03:46 |
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#6 |
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Anton Kidess
Join Date: May 2009
Location: Germany
Posts: 1,377
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Which solver are you using?
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May 21, 2010, 15:15 |
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#7 |
New Member
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simpleFoam.
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May 25, 2010, 04:40 |
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#8 |
Senior Member
Anton Kidess
Join Date: May 2009
Location: Germany
Posts: 1,377
Rep Power: 29 |
Your case doesn't run for me using simpleFoam. I assume you are using 1.6 and I'm still on 1.5, so I can't really help you.
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May 27, 2010, 19:13 |
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#9 |
New Member
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I have installed OpenFoam 1.5. Hardly has altered the project. The problem is considered. But the quasy-empty direction of viscosity Uz is bad to converge.
Here the project: http://rapidshare.com/files/39231032....5.tar.gz.html |
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