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March 28, 2008, 11:57 |
Just to close the issue I brou
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#41 |
Senior Member
Kevin Smith
Join Date: Mar 2009
Posts: 104
Rep Power: 17 |
Just to close the issue I brought up a few posts ago - turns out I made a mistake somewhere along the way and I have it working now in parallel. I simply went back through the process of grid generation, case setup, etc and got it to work.
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October 8, 2008, 09:53 |
dear all,
i am a new user o
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#42 |
New Member
klaus drohme
Join Date: Mar 2009
Posts: 1
Rep Power: 0 |
dear all,
i am a new user of OF-1.5 and have a problem with moveMesh; i tried to move two points of a cuboid along the edges such that the cuboid becomes a wedge. actually it is a small moving patch not only two points. unfortunately the site/patch of the cuboit which inclines doesn´t stay planar.(patch type slip) i tried many different options of the moveMesh untility and always the inclining patch deforms... anyone an idea? |
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November 1, 2008, 10:43 |
I am currently use OpenFOAM1.5
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#43 |
New Member
Peter Lian
Join Date: Mar 2009
Posts: 12
Rep Power: 17 |
I am currently use OpenFOAM1.5 and try to simulate an oscillating airfoil. My first step is to simulate a square moving with constant velocity [1 1 0].
I made some changes based on the example from the tutorial. However, I can only specify the x-velocity in the pointMotionUx and cellMotionUx. I try to change the class from pointScalarField to pointVectorField, but the code does not recognize the definition. The questions are: 1: How should a velocity [1 1 0] be specified? 2: what are the functions of pointMotionUx and cellMotionUx. Thanks. Peter |
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November 12, 2008, 16:03 |
Hi Peter,
1. change dynamic
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#44 |
Senior Member
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Hi Peter,
1. change dynamicMeshDict definition to "solver velocityLaplacian;" and rename *MotionUx to *MotionU changing their content to vectors 2. fixedValue, timeVaryingFixedValue, slip, symmetry, (I have not yet been able to get oscillatingFixedValue to work with OF 1.5) have a good afternoon, -Louis |
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November 12, 2008, 16:26 |
Thanks, Louis.
I am able to
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#45 |
New Member
Peter Lian
Join Date: Mar 2009
Posts: 12
Rep Power: 17 |
Thanks, Louis.
I am able to run the fixedValue. Just like you, the oscillatingFixedValue does not work with OF1.5. From a post under other thread it seems that bc work with OF1.4-dev. The warning message indicates that it is not implemented in OF1.5. With OF1.4, the file is located in src/OpenFOAM/fields/pointPatchFields/derived now it is at src/finiteVolume/fields/fvPatchFields/derived/ Humm... ??? Peter |
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November 12, 2008, 16:55 |
Hi again Peter,
I suppose y
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#46 |
Senior Member
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Hi again Peter,
I suppose you could always define the almost exact same condition as oscillatinFixedValue using a timeVaryingFixedValue condition (especially if you are working with a constant timestep) by using a home-made piece of code to generate the "*.dat" file that defines the mesh motion. -Louis |
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November 12, 2008, 17:26 |
Louis,
Thanks again. It w
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#47 |
New Member
Peter Lian
Join Date: Mar 2009
Posts: 12
Rep Power: 17 |
Louis,
Thanks again. It works. I also find this link discussing the unsteady bc. http://albertopassalacqua.com/?p=69#comment-209 Still do not understand why the oscillatingFixedValue does not work. It is under the same directory. Peter |
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February 25, 2010, 16:11 |
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#48 |
New Member
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Hi there,
I am new to OpenFOAM and I am trying to simulate an oscillating cylinder. Only in the case that someone is looking for another option to simulate oscillating motion. I specified my moving BC as oscillatingVelocity type in the pointMotionU file. Ruben |
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December 3, 2010, 17:13 |
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#49 |
Senior Member
Daniel WEI (老魏)
Join Date: Mar 2009
Location: Beijing, China
Posts: 689
Blog Entries: 9
Rep Power: 21 |
Hi,
It seems to be a bug, during RBF interpolating, the LUdecompose met a singular matrix. The RBF works good for serial, but the parallel run fails. Could anyone helps me on this? Later I found in file "RBFMotionSolver.C", line Code:
Info << "Total points on moving boundaries: " << nMarkedPoints << endl; Code:
Info << "Total points on static boundaries: " << nMarkedPoints << endl; Code:
Info << "Number of internal points: " << nMarkedPoints << endl; And how to do LUdecompose on the whole mesh points, not just one processor? Thanks,
__________________
~ Daniel WEI ------------- Boeing Research & Technology - China Beijing, China |
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December 14, 2010, 06:20 |
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#50 |
Senior Member
Daniele
Join Date: Feb 2010
Posts: 134
Rep Power: 16 |
hi
Can (and How) I use update.mesh to modify a patch of a mesh? I have a rectangular box, and I would update bottom with a new shape, Can I do to solve this problem? Thanks |
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