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 January 26, 2014, 11:22 #2 Senior Member     Alex Join Date: Jun 2012 Location: Germany Posts: 1,387 Rep Power: 22 Concerning number 2, you have several options. You could perform the split operations in a different order, e.g. first do the vertical split at the trailing edge. This way you can choose only the body "behind" the airfoil for the horizontal split. Or you could simply do another boolean operation (unite) with the small volume that is created when you do the horizontal split. Or you could use a bottom-up approach instead, with a separate sketch for each of the parts.

 January 26, 2014, 17:49 #3 New Member   Join Date: Jan 2014 Posts: 3 Rep Power: 5 Thank you for your response Flotus1 Problem number 1 stops me from completing a vertical split, unless I offset the vertical line by .0001 meters. Which is what I did. Now that I have done, that, how do I create an effective mesh on the dome part of the mesh, that contains the airfoil? Seeing how the tutorial calls for the creation of 4 sections, instead of the 3 I have now when I take your advice. As for your other suggestion, the bottom up approach, I am not sure what you mean by that.

January 27, 2014, 03:57
#4
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Alex
Join Date: Jun 2012
Location: Germany
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Quote:
 Now that I have done, that, how do I create an effective mesh on the dome part of the mesh, that contains the airfoil? Seeing how the tutorial calls for the creation of 4 sections, instead of the 3 I have now when I take your advice.
Ok forget about this if you have trouble creating a similar topology like in the tutorial you are using.

Did you try to merge the small part instead?
unite.jpg

Quote:
 As for your other suggestion, the bottom up approach, I am not sure what you mean by that.
The tutorial guides you to create one single geometry for the whole domain in the first place and then splits it into smaller blocks. This is usually referred to as a top-down approach.
The opposite way would be a bottom-up approach where you create a separate sketch for each of the four blocks you want to have in the end.
While creating the surfaces from these 4 sketches, make sure to use the "add frozen" option. Otherwise the geometry will be merged again.
frozen.png
When you are done, select the 4 surfaces together, right-click and choose "form new part". If you dont, you will get interfaces instead of a continuous mesh.

 February 5, 2014, 16:34 #5 New Member   Join Date: Jan 2014 Posts: 3 Rep Power: 5 Thanks Flotus1, your suggestion about bottom up really did the trick! You are the man!

May 24, 2016, 13:34
#6
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J SB
Join Date: Aug 2015
Posts: 6
Rep Power: 3
Quote:
 Originally Posted by flotus1 Ok forget about this if you have trouble creating a similar topology like in the tutorial you are using. Did you try to merge the small part instead? Attachment 28281 The tutorial guides you to create one single geometry for the whole domain in the first place and then splits it into smaller blocks. This is usually referred to as a top-down approach. The opposite way would be a bottom-up approach where you create a separate sketch for each of the four blocks you want to have in the end. While creating the surfaces from these 4 sketches, make sure to use the "add frozen" option. Otherwise the geometry will be merged again. Attachment 28282 When you are done, select the 4 surfaces together, right-click and choose "form new part". If you dont, you will get interfaces instead of a continuous mesh.
Hi. I am working on a similar problem. I applied your second suggestion (the bottom-up approach) and it worked. However, when I define boundary conditions, the edges that contact the 4 surfaces (you can see them in the end link that I attach) are defined as "wall" and I canīt change them to "interior". Is there any solution?