[GAMBIT] Need help in modeling and meshing air flow over a tree

czi1127 · December 18, 2012, 03:30

I am very new to CFD and meshing technique. I am doing a project to simulate air flow through a tree to obtain pressure coefficient. The tree could be represented and modeled as cylinders joint together(trunk and branch). Since I am very new, I have tested with simple object like sphere. But I encountered problem in meshing a cylinder in the 3D air space. Could you please advise me on how to model and mesh a 3D grounded cylinder (like a tree) in the air space. The meshing methodology seems to be totally different and I have no idea how to start.

*I have both Gambit, and ANSYS DesignModeler and Meshing. Simulation software: Fluent.

Thank you.

-mAx- · December 19, 2012, 04:43

*Create your body (sphere, cylinder or whatever)
*Create the box which will represent your outer domain
*Substract box with the body
Now your domain is hollowed (your body is represented with a surface, and this is the only entity which is in contact with your fluid)

December 18, 2012, 03:30	Need help in modeling and meshing air flow over a tree	#1
czi1127 New Member Cheech Lim Join Date: Dec 2012 Posts: 1 Rep Power: 0	I am very new to CFD and meshing technique. I am doing a project to simulate air flow through a tree to obtain pressure coefficient. The tree could be represented and modeled as cylinders joint together(trunk and branch). Since I am very new, I have tested with simple object like sphere. But I encountered problem in meshing a cylinder in the 3D air space. Could you please advise me on how to model and mesh a 3D grounded cylinder (like a tree) in the air space. The meshing methodology seems to be totally different and I have no idea how to start. *I have both Gambit, and ANSYS DesignModeler and Meshing. Simulation software: Fluent. Thank you.

December 19, 2012, 04:43		#2
-mAx- Super Moderator Maxime Perelli Join Date: Mar 2009 Location: Switzerland Posts: 3,297 Rep Power: 41	Create your body (sphere, cylinder or whatever) Create the box which will represent your outer domain *Substract box with the body Now your domain is hollowed (your body is represented with a surface, and this is the only entity which is in contact with your fluid) __________________ In memory of my friend Hervé: CFD engineer & freerider

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