[mahi007]

Originally Posted by Far

Delete the interior circle curves before extruding and use link edge command to make the edges of circular shape.

This procedure is defined in part I.

I tried but did not work. It seems I am going wrong at giving BCs. Please try extruding that mesh with 0.19 spacing and 32 layers.

Please give me directions to work on 3D mesh. Please its urgent.

[Far]

Going to upload two videos (two parts for each and in total four) on youtube today. Worked on both files i.e. attached in this thread and as well as older one.

[Far]

Hi,

do you know how to mesh the connection between two cylinders properly when one small cylinder is perpendicular connected to a bigger one at the top/bottom. (picture 1 +2)

I always have bad elements where the small cylinder meets the ceiling of the bigger cylinder. (picture 3)

Is there a good way to make the connection without these bad elements or are they unavoidable respectively of low importance?


kind regards

You can use y-block for sharp corners http://www.cfd-online.com/Forums/ans...tices-why.html

[Far]

This may also be helpful
http://www.cfd-online.com/Forums/ans...id-y-grid.html

[Far]

@ mahi007: In response to mahi007 queries and converted 2-d cylinder (from old) to 3d cylinder.

Old 2-d files: http://www.4shared.com/rar/LRL3929E/..._complete.html
New 3d files: http://www.4shared.com/zip/_cQL4Sm6/...r_3d_mahi.html


PartI
http://www.youtube.com/my_videos_edi...id=jL2hHxpsrHQ

Part II
http://www.youtube.com/watch?v=1lRRg...ature=youtu.be

[Far]

Refer to post #1

Procedure to convert 2d blocking and geometry into 3d blocking and geometry

2d files (same as posted on post#1) :http://www.4shared.com/zip/njICQ_NM/...thdomains.html

3d files :http://www.4shared.com/rar/A0xrmLf_/Cylinder3d.html



You tube links:

Part I :
http://www.youtube.com/my_videos_edi...id=l-Tz6MHlT1M

Part II :
http://www.youtube.com/watch?v=cWuVV...feature=relmfu

[despaired student]

You can use y-block for sharp corners http://www.cfd-online.com/Forums/ans...tices-why.html

Thanks for the hint. I've already tried Y-blocking but it's not working...
Anyway, the blocking in this geometry looks good. This is just a minor problem.

[Far]

Y-block works for wedge, I am sure you know it. Post pics to identify the problem area.

[despaired student]

Here is one picture and I also added the .tin + prj. + blk. + .fbc files. When you apply the quality-criterion Det 3x3x3 at the pre-mesh you will see the region with the bad elements.