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October 11, 2014, 04:47 |
association of PDE and 3d object
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#1 |
New Member
sheldon
Join Date: Oct 2014
Posts: 1
Rep Power: 0 |
Hello, I am in a CFD class, and we are already discussing hyperbolic equations. we finished the elliptical, and supposedly that is what I would use to determine the air forces on an object at subsonic speeds.
This is not for a class project, but just to help me understand a little better. I created the 2d profile of a bottle, and I want to theoretically launch this bottle through the air, nose first. I understand that I need continuity and specifically the material derivative, as well as momentum, to determine the flows around this bottle. I am struggling with plugging the PDEs learned to the application. could someone please tell me how I would apply the continuity and momentum equations to the bottle? more specifically, would the mesh be the bottle, or some arbitrary points around the bottle? and also is there some simpler way to determine the velocity profile to apply in the spatial derivatives in the divergence, or do I need to go all the way down to the velocity potential, and vorticity? any help greatly appreciated, and I apologize if my questions are confusing. all I'm asking is to be pointed in the right direction. thanks |
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Tags |
beginner, drag, velocity |
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