How to mesh a domain around a rounded geometry with structured grid

quarkz · March 5, 2019, 02:50

Hi,

I would like to simulate flow past a rounded geometry. Hence, I would like to mesh a domain around the geometry with structured grid.

The geometry is:

I can reach until this stage:

So how do I "cover" the top using structured grid?

Also, what if the top is also curved? I tried to do a rotation extrusion :

but the grids on the top can't match with the side/bottom grid:

So what can I do?

Thanks for the help.

bloodyzohair · March 5, 2019, 03:46

Have you tried meshing the top grid first and then extrude the mesh to the bottom.

quarkz · March 5, 2019, 22:05

Hi bloodyzohair,

Would that make a difference? Because the problem lies in the curvature Anyway, I tried to use a Pointwise glf called TriQuad and it seems to work:

Is there a better mtd or is this acceptable?

I also realised that in some regions, it is not possible to join the blocks or domains together. As shown below, when I tried to join the highlighted region, only the white part can join, but not the red part. Is this expected?

Thanks!

March 5, 2019, 02:50	How to mesh a domain around a rounded geometry with structured grid	#1
quarkz Senior Member TWB Join Date: Mar 2009 Posts: 403 Rep Power: 19	Hi, I would like to simulate flow past a rounded geometry. Hence, I would like to mesh a domain around the geometry with structured grid. The geometry is: I can reach until this stage: So how do I "cover" the top using structured grid? Also, what if the top is also curved? I tried to do a rotation extrusion : but the grids on the top can't match with the side/bottom grid: So what can I do? Thanks for the help.

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March 5, 2019, 03:46		#2
bloodyzohair New Member zohair Join Date: Oct 2013 Posts: 13 Rep Power: 12	Have you tried meshing the top grid first and then extrude the mesh to the bottom.

March 5, 2019, 22:05		#3
quarkz Senior Member TWB Join Date: Mar 2009 Posts: 403 Rep Power: 19	Hi bloodyzohair, Would that make a difference? Because the problem lies in the curvature Anyway, I tried to use a Pointwise glf called TriQuad and it seems to work: Is there a better mtd or is this acceptable? I also realised that in some regions, it is not possible to join the blocks or domains together. As shown below, when I tried to join the highlighted region, only the white part can join, but not the red part. Is this expected? Thanks!