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¿center of pressure and moments in interDyMFoam?

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Old   March 17, 2010, 13:42
Default ¿center of pressure and moments in interDyMFoam?
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Hello,

Anybody know if it is possible to calculate the center of pressure and moments in a multiphase simulation using interDyMFoam

Best regards,
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Old   March 17, 2010, 16:16
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Quote:
Originally Posted by anmartin View Post
Hello,

Anybody know if it is possible to calculate the center of pressure and moments in a multiphase simulation using interDyMFoam

Best regards,
Can you tell me what a center of pressure and/or momentum is?
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Old   March 21, 2010, 08:53
Default forces, momoents about and specified center and center of pressure
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Hello,


I want to obtain the sloshing forces and moments to be compare with experimental data of an tank partially filled with water suspected to a sinusoidal lateral excitation in Y direction [A*cos(w*t)]


In fluent it can be done by “reports>forces>...”


I can calculate the forces by [patchIntegrate p walls] this generate the total forces in X Y Z


[Time=15
Area vector of patch walls[0] =(5,51E-17 -8,75E-17 7,72E-19)
Area magnitude of patch walls[0] = 1,01
Reading volScalarField p
Integral of p over vector area of patch walls[0] = (-86,11 -305,32 3,18)
Integral of p over area magnitude of patch walls[0] = 99687,5
]


But I don't know the moments about an specified center [in my case a point in the middle of the lower part of the tank, were I fixed it to the shaker using a 3 axle load cell, in order to measure the vertical forece (Fz), lateral force (Fy) and roll moment(Mx)]


If you can help me I will be very gratefully


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Old   March 21, 2010, 08:58
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I would try to have a look into the tool, which calculated the forces.
Maybe you will have to alter it, so it will output the values you want.
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