[chem engineer]

hello everyone
I am going to model a three-pipe intersection. I know a way to model it, when all radiuses are the same, but in my case, there are two pipes with the same radius but different height, and a pipe with a lower radius than those two, and different height. how should I model these three pipes intersection in gambit?
the exact dimensions of pipes are as follows:
pipe 1: radius(r)=0.1778 m height(h)=203 m
pipe 2: r=0.3910 m h=7755 m
pipe 3: r=0.3910 h=13 m

thank you in advance

[-mAx-]

did you check it ?
https://www.sharcnet.ca/Software/Gam...guide/tg03.htm

do you have a picture of your model?

[chem engineer]

Originally Posted by -mAx-

did you check it ?
https://www.sharcnet.ca/Software/Gam...guide/tg03.htm

do you have a picture of your model?

Yes. I know the method you mentioned here. in this case all radius are the same and all pipes have an angle 90(all of them are perpendicular to each other ), but in my case radius of the pipes are different and it is a T-shape intersection, that is the angle between two of them is 180 and the other is perpendicular to the two others. unfortunately I don't have a picture. I tried some ways but I can't have a good mesh.
I will really be thankful if anyone could help me with this problem.

[-mAx-]

If you get a mesh, then you have a geometry.
Please post a picture of your geometry

[chem engineer]

Originally Posted by -mAx-

If you get a mesh, then you have a geometry.
Please post a picture of your geometry

yes.sorry. but I have a little different geometry now. I tried meshing this one. in this geometry two of the pipes have the same mesh.I'm not even sure if this a true geometry.its picture is as follows.

[chem engineer]

this is also an other geometry i tried to mesh. in this one two pipes have the same radius and are larger than the other. but no way I couldn't mesh it. I think there should be a problem in the way I use to model the geometry.

[-mAx-]

can you provide the dbs file?

[chem engineer]

Originally Posted by -mAx-

can you provide the dbs file?

yes I have a dbs file. what should I do?

[-mAx-]

upload it on a dropbox (or something else) and share download link
I will look at it tomorrow
For sure your model from 2 first pictures will fail, because of large circle and small circles which are tangential
Unbenannt.JPG

[chem engineer]

Originally Posted by -mAx-

upload it on a dropbox (or something else) and share download link
I will look at it tomorrow
For sure your model from 2 first pictures will fail, because of large circle and small circles which are tangential
Attachment 39083

this is the dbs format of another file that I think is a better geometry than those two others. it probably need some other changes before starting to mesh it. but I don't know what the best changes are.
thank you in advance for your consideration.

[-mAx-]

ok
First as I already mentionned you need to sweep your face.11 else you will have skewness problem (in my case I sweeped it with 0.1 along x-axis)
Second you have 3 volumes, but they are not connected. Check at faces 2 and 10 , and also faces 7 and 12. (here you have to connect those faces)
Once it is done you can decompose your geometry for having full hexa mesh.
Check at my volume decomposition, and mesh in this order: orange > blue > yellow or green. For meshing the blue one you need to enforce cooper mesh
Untitled1.png
Untitled.jpg