[ANSYS Meshing] O-grid mesh on cylinder with 90 degree angle not pretty

Benzouz · July 12, 2022, 06:57

Hello all,

I've been following a tutorial on how to create an O-grid mesh on a cylinder geometry (https://youtu.be/8_osCXZjv_g) and it worked well. However, when applying this same technique on a cylinder with a 90 degree bend I don't get something as nice as for the straight cylinder.

Here's what I get for the cylinder with the bend:

And here is what I get for the straight cylinder:

The dimensions of the circle at the base of each cylinder are different, but I have kept the ratios between the size of the square and the size of the circle similar.

Any ideas on why this happens and how to solve it?

Thanks!

Benzouz · July 12, 2022, 07:37

Actually I managed to solve this by setting up an edge sizing on both the square in the middle and on the edges on the sides of the pipe. I had tried this before posting initially but I guess I hadn't set up the right parameters in the number of divisions.

Benzouz · July 13, 2022, 06:13

By the way as I mentioned in the first I had originally kept the same ratio of the square to the circle diameter as in the tutorial, but it seems if I take one slightly different it doesn't work as well:

So once again I'm stuck. Tried playing with different edge sizing but with no luck this time

siw · July 18, 2022, 08:28

Did you check the lower two edge biasing directions?

July 12, 2022, 06:57	O-grid mesh on cylinder with 90 degree angle not pretty	#1
Benzouz New Member Benjamin Join Date: Jul 2015 Posts: 21 Rep Power: 10	Hello all, I've been following a tutorial on how to create an O-grid mesh on a cylinder geometry (https://youtu.be/8_osCXZjv_g) and it worked well. However, when applying this same technique on a cylinder with a 90 degree bend I don't get something as nice as for the straight cylinder. Here's what I get for the cylinder with the bend: And here is what I get for the straight cylinder: The dimensions of the circle at the base of each cylinder are different, but I have kept the ratios between the size of the square and the size of the circle similar. Any ideas on why this happens and how to solve it? Thanks!

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July 12, 2022, 07:37		#2
Benzouz New Member Benjamin Join Date: Jul 2015 Posts: 21 Rep Power: 10	Actually I managed to solve this by setting up an edge sizing on both the square in the middle and on the edges on the sides of the pipe. I had tried this before posting initially but I guess I hadn't set up the right parameters in the number of divisions.

July 13, 2022, 06:13		#3
Benzouz New Member Benjamin Join Date: Jul 2015 Posts: 21 Rep Power: 10	By the way as I mentioned in the first I had originally kept the same ratio of the square to the circle diameter as in the tutorial, but it seems if I take one slightly different it doesn't work as well: So once again I'm stuck. Tried playing with different edge sizing but with no luck this time

July 18, 2022, 08:28		#4
siw Senior Member Stuart Join Date: Jul 2009 Location: Portsmouth, England Posts: 733 Rep Power: 25	Did you check the lower two edge biasing directions?