[James Hetfield]

Hi
where can I learn this stuff?
1- I wanna generate an O-grid around a cylinder
2- a mesh around a wing?
3- designing and meshing around a wind turbine blade+ hub

why there is no tutorial???
I need them for my research but nobody and nothing help me

[Far]

http://www.youtube.com/user/turboeng...?feature=guide

http://www.youtube.com/watch?v=EknKVAJGEJ8

[James Hetfield]

anyone know how to creat a 2-D O-Grid around a circle?

[Far]

Are you looking for these?


http://www.youtube.com/watch?v=T2Dxa...sMzS_aGxIys6E=

http://www.youtube.com/watch?v=CYz3H...feature=relmfu

http://www.youtube.com/watch?v=UgEKo...sMzS_aGxIys6E=

[James Hetfield]

i want something like this
oh GOD, Im so pissed off by ANSYS
no good tutorials for it

[Far]

easily done in ICEM. wait few moments to get snapshots for this particular problem.

[Far]

[Far]

2- a mesh around a wing?

This may help you http://www.cfd-online.com/Forums/ans...mesh-wing.html

[James Hetfield]

THANKS A LOT
FOR SURE you care about other people

I have some questions:

how did u created the initial surfaces and then deleted the smaller circular one?
and also, about the EDGE ASSOCIATION when you have created the 2-D PLANAR block? To what curves have you associated each edge?

[Far]

1) create point 0,0,0

2) then two more points 0.5,0,0 and 0, 0.5, 0

3) another two points 10, 0, 0 and 0, -10, 0

4). Now create two circles for points in step 2 and 3 with centre from step 1 and angle 360

5). divide larger circle into four parts, for this you need two more points, so copy each points for larger circle by 90 deg

6). Go to surface panel and create surface for larger circle

7). Use build topology

8) delete newly created smaller circle.

[Far]

about the EDGE ASSOCIATION when you have created the 2-D PLANAR block? To what curves have you associated each edge?

First I made planner block and then associated all four edges (selected in one go) and associated them to all four curves. Same goes for smaller circle when you make the o-grid

Assign different material to inner most block (inside smaller circle)

[James Hetfield]

Originally Posted by Far

1) create point 0,0,0

2) then two more points 0.5,0,0 and 0, 0.5, 0

3) another two points 10, 0, 0 and 0, -10, 0

4). Now create two circles for points in step 2 and 3 with centre from step 1 and angle 360

5). divide larger circle into four parts, for this you need two more points, so copy each points for larger circle by 90 deg

6). Go to surface panel and create surface for larger circle

7). Use build topology

8) delete newly created smaller circle.

I dont understand step7 and 8
where is Build Topology?

[James Hetfield]

I'll have trouble with this method because I want the left side of the larger circle to be INLET and the right side to be OUTLET
but with this method I cant assign different Boundary Conditions to them

[Far]

'll have trouble with this method because I want the left side of the larger circle to be INLET and the right side to be OUTLET
but with this method I cant assign different Boundary Conditions to them

If you use the pressure far field then no problem other wise you have to modify the method, means two edges to two curves and other two edges to two other curves. got it?

[James Hetfield]

Originally Posted by Far

If you use the pressure far field then no problem other wise you have to modify the method, means two edges to two curves and other two edges to two other curves. got it?

yeah
thanks

[Far]

what about the wind turbine, should we start working on it with fictitious hub

[James Hetfield]

Originally Posted by Far

what about the wind turbine, should we start working on it with fictitious hub

I think whatever hub will work
we can start and then if i needed another hub I'd change it myself
thanks for your help

[Far]

There were three problems present in cylinder case


1. Build topology and delete inner surface (Fig 1)

2. Association of inner circle and assigning different material to inner block (see attached files)

3. Mesh parameters (too many nodes were there)

[James Hetfield]

thanks A LOT

[Far]

lets start working on wind turbine