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How to create this kind of mesh in pointwise ? (Picture attached)

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Old   August 15, 2017, 15:36
Default How to create this kind of mesh in pointwise ? (Picture attached)
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Hi,

I would like to create a hybrid mesh like presented in the picture, is it possible to do it in Pointwise ? I tried to create domains then blocks but it always fails.

Could someone give the steps to follow if this is possible ?
Thank you
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Old   August 17, 2017, 06:29
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Kirill Borodin
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Hello! Yes, it is possible.

The geometry is simple, why did it fail with blocks?

1. Draw planar airfoil and a structured domain around.

2. Draw some connectors around the domain, put some points there and draw an unstructured domain with small elements

3. Draw another domain with bigger elements

4. Extrude the domains to obtain 3d blocks

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Old   August 17, 2017, 06:43
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Quote:
Originally Posted by Kirill-MIPT View Post
Hello! Yes, it is possible.

The geometry is simple, why did it fail with blocks?



Sent from my Redmi Note 3 using CFD Online Forum mobile app
I want part structured and part unstructured around the airfoil, like the picture shows, I created the surface mesh on the wing, and the box around it, I created as well the sides domains, using assemble special for the left and right , but I can't create a block using all the selected domains, and if I try to assemble it manually, it just continue selecting all the domains .

I can't select the box's domains , save it then the wing's wall.

Not sure what I'm doing wrong.

Basically I want something like this :https://www.youtube.com/watch?v=_9et3uEJknI
But the block can't be created...
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Old   August 18, 2017, 13:40
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1) Distribute points on the airfoil, then choose the connectors -> Create -> Extrude -> Normal. By the way, watch the video about C-topology on Pointwise youtube channel, it's close to your problem https://www.youtube.com/watch?v=qifDBLbKvwM



2) Draw a rectangle, put some points there and create an unstructured block of two parts



3) Repeat step 2 with another rectangle. Pay attention to Boundary decay option - the value I have chosen stands for slow decay



4) Choose all the domains -> Create -> Extrude -> Translate. You get a prism domain and a structured one



5) Pay attention to extrusion method - the elements on the edge are bad. Study this via the video

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