Transient table input for gravity
 

Hello foamers!!

I'm trying to work on a slosh simulation and I need to define the motion of the tank as an "acceleration vs time" table. Is there a way to input a table for gravity or is there any other option?

Thanks!
Akshay

Are you trying to plot the acceleration of the tank itself, or the fluid inside it?

Hi Akshay

Some time ago I edit the interFoam solver to use variable gravity. Accelaeration is defined as a table and it depends on simulation time. Solvers was based on interFoam form OF2.3.0 and works fine for me. In attatchment you can find solver code and g dictionary :)

hey Paul : i dont want to move the tank. ..just want to apply the g forces acting on the fluid.

@W.T : the solver seems to be exactly what I need! thanks much! I also noticed that it interpolates values based on the timestep...where is this handled in the code?

Loaded g table is an "Date Entry" object - it is part of OF library.
Other standard BC also use it to time dependent behavior eg. http://www.openfoam.org/version2.1.0...conditions.php

interDyMFOam
 

hey W.T

I tried to implement the same(table input for gravity) for interDyMFoam and everything looks fine when I run it in serial. But in parallel, my pressure monitors shows wrong values (constant values - all probes). Any clue why this is happening?

Akshay