how to calculate minimum force needed to start a motion

doctsh · December 27, 2011, 08:26

Hello everyone,
I have a 2D elliptical solid in rectangular fluid domain. I want to know what is the minimum horizontal force required to start off the horizontal motion. The fluid is highly viscous. Reynodls number is very low. Stokes law is applicable.
Any idea, how to find the minimum force?

Thanks in advance

shk12345 · December 27, 2011, 22:02

i think that you have to use a moving mesh yhen only you can move the body.
Secondly try F=mass * acceleration or other newton law of motion equations and try to find out the minimum velocity for motion of that body.

Hope that helps
shk12345

December 27, 2011, 08:26	how to calculate minimum force needed to start a motion	#1
doctsh Member s Kumar Join Date: Jul 2009 Posts: 50 Rep Power: 17	Hello everyone, I have a 2D elliptical solid in rectangular fluid domain. I want to know what is the minimum horizontal force required to start off the horizontal motion. The fluid is highly viscous. Reynodls number is very low. Stokes law is applicable. Any idea, how to find the minimum force? Thanks in advance

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December 27, 2011, 22:02	hi	#2
shk12345 Senior Member shoeb khan Join Date: Nov 2011 Posts: 179 Rep Power: 15	i think that you have to use a moving mesh yhen only you can move the body. Secondly try F=mass * acceleration or other newton law of motion equations and try to find out the minimum velocity for motion of that body. Hope that helps shk12345