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Search took 0.00 seconds. Search: Posts Made By: PSYMN
Forum: ANSYS Meshing & Geometry November 15, 2011, 20:20
Replies: 49
Views: 20,233
Posted By PSYMN
a) If you are doing 3D Hexa blocking, you get...

a) If you are doing 3D Hexa blocking, you get the volume mesh by default. Perhaps you do not have it displayed? Run a scan plane to see it or right click on blocking and check info to see how many...
Forum: ANSYS Meshing & Geometry March 25, 2010, 14:42
Replies: 49
Views: 20,233
Posted By PSYMN
Took a look...

Hey Andy, I won't have time to try this out, but I gave it a few minutes of thought and may have a blocking solution for you...

Basically, the problem is that your blade is so close to the...
Forum: ANSYS Meshing & Geometry March 24, 2010, 21:12
Replies: 49
Views: 20,233
Posted By PSYMN
Skew

Don't forget that skew is just a number...

And it doesn't apply very well to wedges. If you can't open up that angle any more, you could add a few more nodes across... It wouldn't get rid of the...
Forum: ANSYS Meshing & Geometry March 23, 2010, 19:36
Replies: 49
Views: 20,233
Posted By PSYMN
Highly curved blades?

Hey Andy,

This thread just keeps on growing... Maybe its time to create a new one if any one else has any new questions...

If you meant to include an image, you forgot to. Please try again....
Forum: ANSYS Meshing & Geometry March 23, 2010, 19:19
Replies: 49
Views: 20,233
Posted By PSYMN
Move a vertex.

Zaqie,

Look at the mesh quality in ICEM CFD. You can use the TGrid Skew Metric if you have 12.0 or newer. Actually display the Bad elements on the screen so you can get a good feel for why the...
Forum: ANSYS Meshing & Geometry March 20, 2010, 19:56
Replies: 49
Views: 20,233
Posted By PSYMN
Not fully setup...

Hey Zaqie,

I took a quick look at this yesterday morning, but only had a minute to load the blocking and take a couple pics. I didn't have time to finish fixing it or test if it work. I usually...
Forum: ANSYS Meshing & Geometry March 17, 2010, 09:17
Replies: 49
Views: 20,233
Posted By PSYMN
Relative Vs. Absolute.

Zaqie also asked me another more general question (privately) about how I set these edge distributions. The answer is that in this case, it was just arbitrary.

As for this specific case of...
Forum: ANSYS Meshing & Geometry March 15, 2010, 19:41
Replies: 49
Views: 20,233
Posted By PSYMN
Periodicty check...?

Did you do the periodicity check in ICEM CFD? It is one of the options under "check mesh" that is off by default...

Perhaps your line elements or corner nodes are not in the periodic parts?
...
Forum: ANSYS Meshing & Geometry March 11, 2010, 22:40
Replies: 49
Views: 20,233
Posted By PSYMN
Zaqie... The end.

Then I add some edge params (I just did a rough job here. You should take your time to make sure you have good smooth transitions, etc…


These pics are rough, but here is the scan plane around...
Forum: ANSYS Meshing & Geometry March 11, 2010, 22:36
Replies: 49
Views: 20,233
Posted By PSYMN
Zaqie Continued...

The last split is only necessary because our model is periodic. We want to collapse the trailing edge block and normally we would collapse all the way to the wall to avoid wedges, but we can’t have...
Forum: ANSYS Meshing & Geometry March 11, 2010, 21:44
Replies: 49
Views: 20,233
Posted By PSYMN
Zaqie Continued...

Ok, so now we need to split the Ogrid edge twice… Once for the hub and once for the tip…
2545


Next I zoom in and make 2 splits across the axis, one for upstream of the hub, one for...
Forum: ANSYS Meshing & Geometry March 11, 2010, 21:40
Replies: 49
Views: 20,233
Posted By PSYMN
Ok sure Zaqie, let’s go…

Ok sure Zaqie, let’s go…

First things first… How to make hexa blocking periodic.

Go to “mesh tab => Global Mesh Setup => Set up Periodicity”


2540
Forum: ANSYS Meshing & Geometry March 2, 2010, 20:06
Replies: 49
Views: 20,233
Posted By PSYMN
Final steps... 5 of 5

Then go to the ff boundary and straighten things out there (don’t move the little triangle). You can see the image with the mesh straightened out and the surface blocking straightened out...


...
Forum: ANSYS Meshing & Geometry March 2, 2010, 20:01
Replies: 49
Views: 20,233
Posted By PSYMN
Final steps... 3 of ...

I set sizes on the airfoil (just put 10 nodes in each section), matched edges, etc.

But now that I have fit the triangle to the twisted airfoil, things look pretty twisted… (in the second...
Forum: ANSYS Meshing & Geometry March 2, 2010, 19:57
Replies: 49
Views: 20,233
Posted By PSYMN
Final steps... 2 of ...

Now it is time to associating the trailing edge…

Next, I would handle the triangles on the sides… After moving things into place, I am reminded that the camber will affect projection. I...
Forum: ANSYS Meshing & Geometry March 2, 2010, 19:54
Replies: 49
Views: 20,233
Posted By PSYMN
Final steps... 1 of ...

Shane,

Lets see if we can finish this off. It will take a few posts to get thru all the images I just snapped... But there are not really many steps and it is not difficult...

I saw your...
Forum: ANSYS Meshing & Geometry March 2, 2010, 19:42
Replies: 49
Views: 20,233
Posted By PSYMN
Similar... But Periodic.

Zaqie,

If your model has a sharp trailing edge, then you should do similar to what I showed Shane, except that your model is periodic, so it requires a different treatment... Perhaps just pinch...
Forum: ANSYS Meshing & Geometry March 1, 2010, 15:21
Replies: 49
Views: 20,233
Posted By PSYMN
Last Pic...

CFD-Online only lets me post 5 pics, and I had 6;)

Here is the last one after the collapse of the trailing edge block.

Now Shane needs to split the other direction for the airfoil root and tip...
Forum: ANSYS Meshing & Geometry March 1, 2010, 15:19
Replies: 49
Views: 20,233
Posted By PSYMN
Blocking strategy

Hello all,

ShaneStan sent me his files and I just took a quick look… He was having trouble blocking this airfoil and just needed help getting a good topology. He was particularly having...
Forum: ANSYS Meshing & Geometry February 24, 2010, 10:14
Replies: 49
Views: 20,233
Posted By PSYMN
I guess there are lots of “Stator” tutorials out...

I guess there are lots of “Stator” tutorials out there... There was an ICEM CFD Hexa one also. It covered Periodic blocking (yes you can make ICEM CFD Hexa Periodic).

To make an ICEM CFD Hexa...
Forum: ANSYS Meshing & Geometry February 20, 2010, 13:41
Replies: 49
Views: 20,233
Posted By PSYMN
If you can find it, there is a "stator" tutorial...

If you can find it, there is a "stator" tutorial for meshing in ICEM CFD. That would be a good starting point. I would send it to you, but I haven't seen it for a while myself. It may not have been...
Showing results 1 to 21 of 21

 
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