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January 6, 2014, 16:30 |
Meshing a Rocket Injector Assembly
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#1 |
New Member
Ashis Ghosh
Join Date: Jan 2014
Posts: 4
Rep Power: 12 |
Hi There,
I'm creating a mesh for an injector assembly to be used in a hybrid rocket. I will eventually export the mesh to use with OpenFoam. With the mesh featured in the pictures I achieved a non-orthogonality of 85, which is much to high to obtain usable results. To create the mesh I set up the line mesh for all the edges to achieve that orthogonal appearance that you can see on the outside. However, I do not know how I can replicate that for the inside. I've tried the various types of meshing methods available between octree and hexa dominant. As this is my first serious project with ICEM-CFD I am still highly inexperienced. Any advice or tips would be welcome. cutmesh.PNG fulloutside.PNG closeoutside.PNG model.jpg Thanks. |
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January 18, 2014, 14:29 |
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#3 |
New Member
Ashis Ghosh
Join Date: Jan 2014
Posts: 4
Rep Power: 12 |
Upon trying that, I get the following:
Cut view: full.jpg Close up: close.PNG The max non-orthogonality increased from 85-89, but the average went down to 17 from 29. However, this time it failed to checkMesh checks from OpenFoam for skewness. Any suggestions? Thanks! |
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January 19, 2014, 05:13 |
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#5 |
Senior Member
Javi
Join Date: Jan 2013
Posts: 276
Rep Power: 16 |
Can you share your geometry?
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January 19, 2014, 11:54 |
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#6 |
New Member
Ashis Ghosh
Join Date: Jan 2014
Posts: 4
Rep Power: 12 |
I used the hexa-dominant method - is that different from the HEXA method? I am a bit confused with all of this.
Here's my geometry as a .STEP file. InjFlow.zip Thanks! |
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January 21, 2014, 05:06 |
ICEM-InFlow
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#8 |
Member
Raghav
Join Date: Jul 2010
Location: India, Karnataka
Posts: 47
Rep Power: 18 |
Hi Ashis,
I have uploaded the files in the dropbox https://www.dropbox.com/s/spsxctmlz9zui38/InFlowShared.zip You can refine further if u want. Regards, Raghav Last edited by raghav; January 21, 2014 at 06:12. |
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February 5, 2014, 00:52 |
Thank you!
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#9 |
New Member
Ashis Ghosh
Join Date: Jan 2014
Posts: 4
Rep Power: 12 |
Thank you very much - this will be a great help!
Where would I be able to learn how to do it to this degree? I tried many times to achieve the same thing. Could you explain your blocking strategy? Again, much thanks! |
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March 7, 2014, 00:40 |
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#10 |
Member
Raghav
Join Date: Jul 2010
Location: India, Karnataka
Posts: 47
Rep Power: 18 |
Hi Ashis,
It will come by practice. I used 1. Combo of Bottom-Up and Top-Down approach. 2. Used O-Grids in Tandem |
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Tags |
ansys, complex, geometry, icem, meshing |
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