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November 8, 2013, 07:52 

#21  
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Sheng
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November 10, 2013, 07:57 

#22  
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Daniel
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The convergence is now smoother and the minimum quality is equal to 0.892. but mesh density near the corner is a problem in my unsteady simulation. I have to decrease the time step just because of that region! 

November 10, 2013, 09:10 

#23 
Super Moderator

this is almost similar to what i did. Only difference is that I made one extra split before Ygrid. Now you can apply ogrid to improve solution accuracy and convergence. Or you can make ogrid first and then merge vertices and Yblock.
why you are solving 3d problem? 

November 10, 2013, 09:39 

#24  
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Daniel
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It is not actually a 3D problem, I am using OpenFOAM and as you know it only works in 3D. So any geometry must have 3 dimensions. However if we only need to solve a problem in 2 dimensions, defining the planes perpendicular to the third direction as "empty" type, will do the job. 

November 11, 2013, 16:22 

#25  
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Daniel
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thanks in advance 

November 12, 2013, 06:26 

#27 
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Daniel
Join Date: Mar 2013
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yes...
1 I have done vertical and horizontal splits as you suggested. 2 I have removed the block at lower right corner. 3 I have applied the Ogrid. 4 a little playing with merge & move vertices to make it nice. 5 Then I have applied Yblock many thanks for your help 

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