Urgent: How to model a stationary sphere in a pressure driven flow using Ansys CFX?

farhan · April 8, 2009, 15:24

Hi,
My question is that how can I simulate to find the drag force on a stationary sphere in a cylinderical pressure driven poiseuille flow Using Ansys CFX 11.0.

What I am doing is

I made sphere in a pipe
Inlet condition is parabolic using Umax*(abs(1-(r/Rmax)^2)
Outlet condition is zero average static pressure
No slip at the cylinder and the sphere with zero wall velocity on both.

When I model it I do not get the right answer as availble in literature.

Kindly help me out and tell me where I am wrong.

kerstin · April 14, 2009, 15:34

Hey,

Wrong forum, if you expect help with CFX.
Here in the OpenFOAM forum, we only can advise you, to switch the solver. ;-)

April 8, 2009, 15:24	Urgent: How to model a stationary sphere in a pressure driven flow using Ansys CFX?	#1
farhan New Member Farhan Join Date: Mar 2009 Posts: 6 Rep Power: 17	Hi, My question is that how can I simulate to find the drag force on a stationary sphere in a cylinderical pressure driven poiseuille flow Using Ansys CFX 11.0. What I am doing is I made sphere in a pipe Inlet condition is parabolic using Umax*(abs(1-(r/Rmax)^2) Outlet condition is zero average static pressure No slip at the cylinder and the sphere with zero wall velocity on both. When I model it I do not get the right answer as availble in literature. Kindly help me out and tell me where I am wrong.

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April 14, 2009, 15:34		#2
kerstin New Member Kerstin Heinen Join Date: Mar 2009 Location: Ludwigshafen, Germany Posts: 27 Rep Power: 17	Hey, Wrong forum, if you expect help with CFX. Here in the OpenFOAM forum, we only can advise you, to switch the solver. ;-)