[ICEM] How To Improve Pre Mesh Quality In O grid Based Double Pipe Cylinder

Shomaz ul Haq · February 25, 2016, 06:54

Dear all,

Hi. Hope all are well. I am facing a problem of bad quality for Criterion Angle. I am using O grid. How can I improve quality? I am attaching jpeg. Would be grateful. Thanks.

attiquejavaid08 · February 26, 2016, 04:13

Quote:

Originally Posted by Shomaz ul Haq

Dear all,

Hi. Hope all are well. I am facing a problem of bad quality for Criterion Angle. I am using O grid. How can I improve quality? I am attaching jpeg. Would be grateful. Thanks.

attach some clear picture of cross-sectional view and blocking edges

Far · February 26, 2016, 11:07

I guess O-grid has not been generated successfully !

Shomaz ul Haq · February 27, 2016, 01:00

Thank you attiquejavaid08. I have attached image of cross section with blocking edges. Please help me in improving quality. Thank you Far. Far why do you think O grid is not successful? And if something is wrong with the O grid how can I improve it? Would be grateful.

Shomaz ul Haq · February 27, 2016, 05:03

I have managed to improve the quality for Criterion angle by including another O grid inside.

eeLio · January 15, 2018, 05:58

Dear Shomaz,

I am facing the same problem,

Did you manage to solve your issue? Although you improve your quality with another o-grid you still have "bad elements" in terms of "angle" around the four corners?

I was thinking that maybe there is a way to change the type of mesh of the o-grid (but still mostly hexa elements)...

Best

eelio

shereez234 · January 15, 2018, 06:38

Quote:

Originally Posted by eeLio

Dear Shomaz,

I am facing the same problem,

Did you manage to solve your issue? Although you improve your quality with another o-grid you still have "bad elements" in terms of "angle" around the four corners?

I was thinking that maybe there is a way to change the type of mesh of the o-grid (but still mostly hexa elements)...

Best

eelio

In the small circle inside when you do an O grid you associate and use spline to make the edges in the shape of a circle. But for the O grid that goes inside you keep it as a square without linear or spline splits and thus avoiding making it circular. that will improve the corners.

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February 26, 2016, 11:07		#3
Far Super Moderator Sijal Join Date: Mar 2009 Location: Islamabad Posts: 4,553 Blog Entries: 6 Rep Power: 54	I guess O-grid has not been generated successfully !

February 27, 2016, 05:03		#5
Shomaz ul Haq Senior Member Shomaz ul Haq Join Date: Aug 2015 Location: Islamabad, Pakistan Posts: 205 Rep Power: 11	I have managed to improve the quality for Criterion angle by including another O grid inside.

January 15, 2018, 05:58		#6
eeLio New Member Federico Join Date: Sep 2017 Posts: 13 Rep Power: 8	Dear Shomaz, I am facing the same problem, Did you manage to solve your issue? Although you improve your quality with another o-grid you still have "bad elements" in terms of "angle" around the four corners? I was thinking that maybe there is a way to change the type of mesh of the o-grid (but still mostly hexa elements)... Best eelio