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Torque/force on a surface due to fluid flow/fluid-structure interaction

Question asked by David Flemming on Oct 23, 2015
Latest reply on Oct 5, 2018 by Bill McEachern

Hi Simulateers,


I'm doing a simple Flow Simulation of a rotating fan propeller. So I set up my rotating reference frame (Averaging) and define an angular velocity. It's an internal analysis so I define the computational domain, the environmental pressure, the outlet static pressure as well as an Inlet air velocity.


The goal of my analysis is to determine to the torque on the fan blade as a result of it coming in contact with the air around it. In other words, the fan is rotating due to the torque provided by the motor, but there must be a resistance from the air it contacts while rotating...this resistance should provide a somewhat negative torque to the torque provided by the fan motor.


I'm trying to determine this negative/retarding torque...I've checked through the goals and used some of the Torque surface goals but I'm not sure if the value are correct.


Has anyone ever tried this before? I'd be glad to hear your comments.