Cut Cell Meshing

Jenisha_Naidoo · August 2, 2011, 08:54

Hi

What are the advantages and disadvantages of using the cut cell meshing feature in ANSYS Meshing?

PSYMN · August 3, 2011, 10:16

The main advantage is that you can easily (push button mesher) get a predominantly hexa mesh with inflation layers to capture your viscous boundary effects. Studies have shown that the solver likes the mesh and converges more quickly and accurately than with tetra/prism meshes.

The main disadvantage is that it only works with the Fluent solver. CFX, ANSYS Mechanical, AUTODYN, etc. do not support the hanging nodes or polygons that come with cutcel mesh.

This mesher is relatively new to ANSYS Meshing and has been under heavy development the past few years, so if you have an old version, it may not yet support baffles or narrow spaces well, etc. 13.0 was good for most applications (I had a CHT computer case with heat sinks (lots of thin gaps) that turned out beautiful) and this next release (14.0) sorts out most (maybe all) of the remaining issues.

Try it out on your own case and let us know what you think the advantages or disadvantages are.

I am also interested to hear what others think...

shiva102 · March 4, 2014, 07:42

in ansys meshing (workbench) i tried to make a cutcell mesh but i had problem in making inflation...?

Vidyanand Kesti · March 6, 2014, 09:48

cut cell method is good when your geometry cleaned properly usually used this mesh when I want to know the quick results. If I am able to understand flow physics inside flow domain its really good and helps lot. I do the rough clean up and click on cut cell run simulation..

shiva102 · March 7, 2014, 04:56

Quote:

Originally Posted by Vidyanand Kesti

cut cell method is good when your geometry cleaned properly usually used this mesh when I want to know the quick results. If I am able to understand flow physics inside flow domain its really good and helps lot. I do the rough clean up and click on cut cell run simulation..

how to do geometry cleanup in workbench

raunakjung · January 5, 2017, 02:24

Do you know a good tutuorial to learn Cut cell meshing in ICEM ?

tejareddy · April 9, 2017, 00:37

had done meshing in icem-cfd and saved as blocking(.blk) for remapping in ansys autodyn but when i tried to remap from autodyn it remains with error the file is inconsistent
and
i have tried to import from ls-dyna (.k) it has taken but when i go for 2d fill remapping air and tnt (2d analysis already done) it remains with an error there are no cells to fill
my dear please help me with this trouble.

August 2, 2011, 08:54	Cut Cell Meshing	#1
Jenisha_Naidoo New Member Jenisha Naidoo Join Date: Jul 2011 Posts: 2 Rep Power: 0	Hi What are the advantages and disadvantages of using the cut cell meshing feature in ANSYS Meshing? Oula and Aabadani like this.

August 3, 2011, 10:16		#2
PSYMN Senior Member Simon Pereira Join Date: Mar 2009 Location: Ann Arbor, MI Posts: 2,663 Blog Entries: 1 Rep Power: 47	The main advantage is that you can easily (push button mesher) get a predominantly hexa mesh with inflation layers to capture your viscous boundary effects. Studies have shown that the solver likes the mesh and converges more quickly and accurately than with tetra/prism meshes. The main disadvantage is that it only works with the Fluent solver. CFX, ANSYS Mechanical, AUTODYN, etc. do not support the hanging nodes or polygons that come with cutcel mesh. This mesher is relatively new to ANSYS Meshing and has been under heavy development the past few years, so if you have an old version, it may not yet support baffles or narrow spaces well, etc. 13.0 was good for most applications (I had a CHT computer case with heat sinks (lots of thin gaps) that turned out beautiful) and this next release (14.0) sorts out most (maybe all) of the remaining issues. Try it out on your own case and let us know what you think the advantages or disadvantages are. I am also interested to hear what others think... vasava and Oula like this. __________________ ----------------------------------------- Please help guide development at ANSYS by filling in these surveys Public ANSYS ICEM CFD Users Survey This second one is more general (Gambit, TGrid and ANSYS Meshing users welcome)... CFD Online Users Survey

March 4, 2014, 07:42	can we make a cutcell cartesian mesh in icem cfd...?	#3
shiva102 New Member SIVAKUMAR Join Date: Jul 2013 Location: coimbatore Posts: 13 Rep Power: 12	in ansys meshing (workbench) i tried to make a cutcell mesh but i had problem in making inflation...?

March 6, 2014, 09:48		#4
Vidyanand Kesti Member vidyanand Join Date: Nov 2011 Location: bangalore,india Posts: 66 Rep Power: 17	cut cell method is good when your geometry cleaned properly usually used this mesh when I want to know the quick results. If I am able to understand flow physics inside flow domain its really good and helps lot. I do the rough clean up and click on cut cell run simulation.. Oula likes this.

January 5, 2017, 02:24		#6
raunakjung Senior Member raunak jung pandey Join Date: Jun 2016 Posts: 102 Rep Power: 9	Do you know a good tutuorial to learn Cut cell meshing in ICEM ? OYYO likes this.

April 9, 2017, 00:37		#7
tejareddy New Member teja reddy Join Date: Apr 2017 Posts: 1 Rep Power: 0	had done meshing in icem-cfd and saved as blocking(.blk) for remapping in ansys autodyn but when i tried to remap from autodyn it remains with error the file is inconsistent and i have tried to import from ls-dyna (.k) it has taken but when i go for 2d fill remapping air and tnt (2d analysis already done) it remains with an error there are no cells to fill my dear please help me with this trouble.

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