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Old   February 20, 2014, 06:12
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vishnu
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Hello,

Regarding multiphase flow,

I have 5 stl files, and one stl is a big geometry and other 4stl are very small. I am using snappyHexMeshmand i need a total mesh size of 50,000 cells.

but i can't able to reduce less than 100,000 cells..

please suggest me the ways to reduce the overall cell size..
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Old   February 25, 2014, 15:03
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Julian Langowski
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dear vishnu,
what does "big" and "small" compared to the whole solution domain mean?

Possible ways:
- Reduce base blockMesh fineness (e.g. by using higher grading)
- Reduce domain size
- Reduce snappy max. fineness level

Keep in mind, less cells can lead to poorer accuracy.

Best regards
Julian
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Old   March 5, 2014, 08:57
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vishnu
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thankyou for your reply,,

for eg:

I have a big tank coneected with small pipes in a domain..
If i try to reduce the blockMesh fineness or using snappy i am not getting the complete mesh with all pipes and tank..

I mean the pipes are not getting meshed completely..my mesh is getting incomplete...

i have to get complete mesh but with minimum cells, now i dont want quality of mesh..

is there any idea
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