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Old   January 21, 2011, 10:06
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How now? i am lost :'(
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Old   January 21, 2011, 12:13
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go and check face.2606
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Old   January 21, 2011, 22:29
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what do u want me do with it? merge with 2384?
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Old   January 24, 2011, 02:08
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if you read the warnings , it says that face.2606 has less than 3 nodes on its outer edges. And can Gambit has difficulty to mesh this face.
So try to mesh this face with finer resolution (eg: more nodes).
Then, as you are in this area check face.2608 and especially sharp angle at vertex.4198.
Here you will have to merge face.2608 with face 2547
This kind of operations is typical
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Old   January 27, 2011, 07:25
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ok max, i cant even continue with i know nothing. Now i need to know what i have done actually. So, i redo everything again
1) I import my stp file.
2) I unite all the Volume.
3) I create the surrounding volume.
4) I subtract it. and i get the pic below


Now i explain this picture then u grade me is it what i done is correct.
remember that first time i told u that the geometry isnt correct due to the hole? Now maybe i get it, the hole is the solid that i subtract of, which mean i am not going to mesh there, but just what i have subtracted (which is the air and the adjacent surface the air contact to) right?
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Old   January 27, 2011, 07:51
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yep
Just for you information: you gonna mesh a complex geometry, especially for a beginner. So don't give up
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Old   January 27, 2011, 09:14
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Hmm, i have found out that from previous what have i done, i had unite all the volume become 1. Lets assume after i mesh it, i need to define boundary condition. Isn't it very tedious as my boundary condition is very complex too. Is it now i have to define it first?
Here, i have upload another image about my boundary condition.
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Old   January 27, 2011, 09:36
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Defining boundary conditions is just picking surfaces.
So you can choose them at the end.
You don't need to define the rest as wall since gambit will automatically do it for you
I am not sure modeling the inlet fan is a good idea for a first try.
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Old   January 27, 2011, 09:44
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huh, but i need that in my project.
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Old   January 27, 2011, 09:54
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Then go and mesh what you have.
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Old   January 27, 2011, 10:44
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Before that, i got few question to ask.
When i import my step file, i done some modification on it, that is, moving the PSU abit lower, so that the hole cannot be seen(i sure this is what i need, as that is the casing part that close the PSU itself. then i unite it as usual, it can unite, but 2 message coming out.
WARN : Problematic geometry reported in volume 1. (volume 1 is the only volume left after i unite)
WARN : There are output entities with badly checking geometry.
why?
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Old   January 27, 2011, 10:53
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No idea since I don't have the model (and I cannot reproduce it)
But this is just warning, so you can continue
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Old   January 27, 2011, 10:59
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ok, now i create a volume(i guess if i create it same size as the largest volume(this case is casing) will make me easier as i dont need to spilt the volume to make the size smaller again right?
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Old   January 27, 2011, 11:14
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I don't understand waht you mean
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Old   January 27, 2011, 11:16
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isnt it now i have to create a volume and subtract with the original volume so i can get fluid that i want to mesh? about the volume i want to create, is it i create it at the same size with the casing?
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Old   January 27, 2011, 11:21
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yes, but not smaller.
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Old   January 27, 2011, 11:25
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i done it. Here d pic,

but what is the 4 volume coming out for?
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Old   January 27, 2011, 13:39
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should be isolated "fluid"-volumes, but not direct connected with the main one
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Old   January 29, 2011, 10:51
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wat shud i do with that bro?
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Old   January 31, 2011, 02:15
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delete them
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