Meshing !
 

helloo

I got an Error saying "Non positive Volumes Exist, Grid Check Failed " while doing a grid Check in Fluent. why is this happening ?? and wht should i do to get the error out ?

Thanks

Bharath

Re: Meshing !
 

you can mesh the model using Gambit!

Re: Meshing !
 

Yes, but I have had non-positive volume problems when using GAMBIT, so I don't understand your point...

Re: Meshing !
 

What type of geometry u built up? If the blocks overlapped on each other this could be happen.

1. Try to rebuild and take care when combind or split. 2. Check from gambit how many volumes r there? Is there any unnecessary volumes (double volume) which might be created by copying? If so, remove this. 3. Best way to start from scrach.

Alamgir

Re: Meshing !
 

i met this problem before, that is to say , your grid is not good enough to caculate. you have to remeshi your grids

Re: Meshing !
 

Hi Bharath,

I seem to have ran into the same problem! I spent ages building my model from Gambit, and it was successfully exported, Yet, when I did a grid check in Fluent, there was the negative volume problem!

I have tried re-starting, re-meshing a few times, but not every time was successful.

Thanks for everyone's posting on this thread. I will go back and (1) check for redundant volumes (2) overlapping volumes during meshing and (3) reducing the size of the mesh.

I will ask for more help from you guys if it doesnt work.

Gracias!