Slosh dynamics

Slosh dynamics

Slosh refers to the movement of liquid inside another object that is under motion. The liquid must have a free surface for it to be a slosh dynamics problem. The dynamics of the liquid can interact with the object that contains to alter its dynamics significantly. See also free surface effect.

Practical Effects

It is an important effect for aircraft and spacecraft. [Maneuvering control problems for a spacecraft with unactuated fuel slosh dynamics Reyhanoglu, M.Control Applications, 2003. CCA 2003. Proceedings of 2003 IEEE Conference on Volume 1, Issue , 23-25 June 2003 Page(s): 695 - 699 vol.] Slosh was a factor in the recent Falcon 1 2nd test flight problem.

The effect of slosh is used to limit the bounce of a roller hockey ball. Water slosh can significantly reduce the rebound height of a ball but some amounts of liquid seem to lead to a resonance effect. [Sport ball for roller hockey; U.S. Patent 5516098 May 14, 1996; Jeffrey Aiello] Many of the balls for roller hockey commonly avaialble contain water to reduce the bounce height.

References


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