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April 4, 2010, 18:57 |
H-O-H-Mesh on T106A Turbine Blade
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#1 |
Senior Member
Joshua Counsil
Join Date: Jul 2009
Location: Halifax, Nova Scotia, Canada
Posts: 366
Rep Power: 17 |
Hello all -
Problem: I have searched up and down this forum and online for a tutorial on how to create an H-O-H-grid for a turbomachinery problem. I have completed most of the tutorials on the portal (2D pipe, 3D pipe...), but none of them seem to cover my specific problem. I noticed people mentioning a stator tutorial, which could be useful, but I could not find it. I did find the .zip files of ICEM PowerPoint lectures somebody posted. They were somewhat useful, but still didn't answer my problem. I will be importing the mesh into CFX. Here is the geometry: [img=http://img101.imageshack.us/img101/7696/icemt106ageom.th.jpg] The first square inlet region is the first H-grid section. I then want an O-grid around the airfoils (the top section is the pressure surface, the bottom is the suction surface), followed by a transition to another H-grid in the rectangular outlet. Method: I blocked the domain like this: [img=http://img694.imageshack.us/img694/7884/icemblocking1.th.jpg] With the associations shown: [img=http://img706.imageshack.us/img706/5061/icemblocking2.th.jpg] The thought process here is that I want the first and last blocks to be simple, structured H-grids. The airfoil block has an O-grid split (the blue square). The diagonal block after the airfoils will be a transition region between the O- and H-grids. I'd like the O-grid to be orthogonal to the airfoil, and refined for proper boundary layer capturing. I know how to make the entire domain unstructured prisms. I know how to create a fully structured H-mesh with specified nodes. I don't know how to implement both in the same simulation. Any help would be much appreciated, whether it's simple advice, tutorials, or (bonus) instructions. |
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April 6, 2010, 20:58 |
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#2 |
Senior Member
Joshua Counsil
Join Date: Jul 2009
Location: Halifax, Nova Scotia, Canada
Posts: 366
Rep Power: 17 |
Any help? I will be taking ICEM workshops over the summer when we receive our new budget, but I have a conference before then and need to have this simple simulation to present.
Please don't think I'm being lazy. I've blown 6 work weeks on this already, but can't seem to get any help. |
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May 10, 2011, 03:50 |
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#3 |
Senior Member
mohammad
Join Date: Dec 2010
Location: UK
Posts: 245
Rep Power: 16 |
Hi Joshua,
I have the same problem as yours. I Think you can help me now. Do you have any idea how to create HOH grid? regards |
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May 10, 2011, 04:29 |
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#4 |
Member
jeevan kumar
Join Date: Mar 2009
Posts: 88
Rep Power: 17 |
Hello Josh,
can you just sketch and show how you want a H-O-H grid (free hand sketch). if possible can you upload the geometry, so that i can make you the required topology for you. Thank you jeevan |
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May 10, 2011, 04:34 |
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#5 | |
Senior Member
mohammad
Join Date: Dec 2010
Location: UK
Posts: 245
Rep Power: 16 |
Quote:
can you help me to have some general info and some pics of HOH grids. I'm just beginner in HOH. TNX a million |
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May 10, 2011, 14:01 |
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#6 |
Senior Member
Joshua Counsil
Join Date: Jul 2009
Location: Halifax, Nova Scotia, Canada
Posts: 366
Rep Power: 17 |
Hey guys -
Please read this thread: http://www.cfd-online.com/Forums/ans...-elements.html It solved my problems. Good luck. |
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