[no183]

huh? bro, why? sorry a stupid question

[-mAx-]

because you don't need those volumes.
They are isolated volumes without any fluid-connection to your computationnal domain.

[no183]

oh sorry heading for my CNY holiday, get to work. now i know, i deleted it, can i start meshing?

[no183]

? are u there bro?

[-mAx-]

Originally Posted by no183

can i start meshing?

yes you can

[no183]

ok, i meshed it.. Unfortunately, it caused me around 30 minutes, and this time, all the result i save for u to analyse. i get some of the meaning, but some not. Guide me thanks

[-mAx-]

Examine face face.3086, you will see that skewed cells are linked with topology "issue" like sharge angle etc...
Use merge tools for fixing this problem.
Then same thing with face face.2557, etc....
But as I already told you, I would FIRST try to mesh your domain without all your fans, which will give your lots of "clean-up" work

[no183]

Originally Posted by -mAx-

But as I already told you, I would FIRST try to mesh your domain without all your fans, which will give your lots of "clean-up" work

How to mesh domain without fan? i using mesh volume feature which select all volume at once?

[-mAx-]

when you started with import: delete fan's volumes before substracting

[no183]

hmm, ok forget about deleting the fan volume first, i will try with examine face, for examine face, what shud i do? where is the examine face button?

[-mAx-]

direct above your windows clock

[no183]

That is examine mesh, fine. now i press it. Where to edit so that i can examine face 3086? This is the place where only i can see the quality of the mesh.

[-mAx-]

go to range
select all kind of elements (hexa/pyramid/wedge/tetra)
set lower limit to 0.9
set upper limit to 1
and display...
all the displayed element should be fixed (especially elements between 0.95 and 1)

Then check where are the cells, they should be focused at one topology "issue" like sharp edge etc...
Then exit to the examine panel, et display the surfaces where Gambit failed to mes the surfaces. You should recongnize the topology "issues"...

[no183]

i presume i done it correctly? but why when i press update, it will reset back lower and upper limit 0 and 1 with no element in there? NOTE THAT i already change the lower and upper limit as u say

[-mAx-]

your volume mesh failed, that's why you cannot see any volume elements (because you don't have any)
do the same but with 2d elements

[no183]

wow, can i did this while i off mesh in display attribute? cause it is annoying freaking long just to see it. and i cant rotate the screen(left click turn) as all hang started again

[-mAx-]

with 2 elements, it shouldn't be slow.
With 10miilions volume elements, then yes, you can pray that your session won't crash.

[no183]

ya, finnaly at the end, i am NOT able to see it. i will consider removing the fan volume again then if that is the only idea

[no183]

hey, i am back, remeber last time i say i want to remove the fan, i did it. and here is the summary.
I import the STP file and delete the fan partition.
Then unite whole volume, subtract it to get fluid domain.
Then i mesh using "Mesh Volume" with spacing of 1. Fortunately, 1 equisized skew issue only comes out. But, mesh fail and the transcript state that due to face 43, asking me to mesh face 43 using the "Mesh face" function(i guess i correctly digested the meaning?)
Then i do face meshing at face 43, here is the result
i am running out of idea now. What should i do?

[-mAx-]

you are trying to mesh your face (complex one) with quad.
Forget trying to mesh your volume with hexa.
Switch with tetra (tri for surface mesh)