Setting up Lift/Drag Monitors in Fluent

eeyago7 · April 17, 2014, 08:37

Hi All,

I have a simulation involving turbulent flow within a short pipe and I would like to analyse the forces exerted onto the wall. I have drawn the pipe symmetrical along the x-axis and would like to measure the lift & drag on the pipe due to flow inside it.

I am unsure of how to set the force vectors, I want to measure the force exerted on the pipe on the 'Z' axis, do I simply set x =0 ,y=0 and z=1 for the force vector?

Kind Regards,
I

Kina · April 19, 2014, 10:20

Yes you do. However, I am asking myself how the pipe would develop any z-force if it is symmetrical. I think you don't need anything like the area based lift coefficient so you can just run the calculation and then go to 'reports' -> 'forces' which can display the force in z direction as that is what you might be interested in. Otherwise, you will need a reference area but for a pipe, I would just go with the force reports.

April 17, 2014, 08:37	Setting up Lift/Drag Monitors in Fluent	#1
eeyago7 New Member Iain Join Date: Mar 2014 Posts: 2 Rep Power: 0	Hi All, I have a simulation involving turbulent flow within a short pipe and I would like to analyse the forces exerted onto the wall. I have drawn the pipe symmetrical along the x-axis and would like to measure the lift & drag on the pipe due to flow inside it. I am unsure of how to set the force vectors, I want to measure the force exerted on the pipe on the 'Z' axis, do I simply set x =0 ,y=0 and z=1 for the force vector? Kind Regards, I

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April 19, 2014, 10:20		#2
Kina Senior Member Alex Join Date: Jan 2014 Posts: 126 Rep Power: 12	Yes you do. However, I am asking myself how the pipe would develop any z-force if it is symmetrical. I think you don't need anything like the area based lift coefficient so you can just run the calculation and then go to 'reports' -> 'forces' which can display the force in z direction as that is what you might be interested in. Otherwise, you will need a reference area but for a pipe, I would just go with the force reports.