Sloshing of tank
 

Hi Everybody,
I am trying to simulate tank sloshing in roll motion. I successfully simulated tank sloshing given the periodic surge motion. But when i am give roll motion i am getting error. I am using CFX. The tank is given specified displacement. I am using cylindrical coordinate system. Following the expression i am using
A = 0.17 [rad]
Amplitude = if (t<=8[sec], A, 0[rad])
disp = Amplitude*cos (omega*t)*1[m]/1[rad]

the error i am getting is ATTACHED IN FILE.

Hey i am also doing sloshing experiment. I am using fluent. You used a UDF here for oscillating motion

Hi,

It clearly says your mesh is of pour quality. Try some inflation layers on the walls if you dont have them allready.
You dont have any mesh deformation enabled, do you? I mean because of the posibility to colapse the mesh near moving walls

My guess is:

+--------------------------------------------------------------------+
| ERROR #002100027 has occurred in subroutine cNWDIST. |
| Message: |
| At least one highly skewed element has been detected on a wall |
| boundary, leading to an unreliable near-wall distance calculation |
| for the turbulent wall functions. The solver will continue |
| to execute, but convergence and/or accuracy may be affected. |
| Please consider improving the mesh quality. The coordinates of |
| the element face are ( -0.3102E-02, 0.2000E+00, -0.1831E-02 ). |
+--------------------------------------------------------------------+

but it's just a guess.

volume fraction axis changed
 

hi,

i am facing a change in the axis direction in the final stage.The picture is added.
kindly tell a solution..as the water volume should be horizontal(in green)

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