Damping of liquid sloshing by foams: from everyday observations to   liquid transport
  We perform experiments on the sloshing dynamics of liquids in a rectangular container submitted to an impulse. We show that when foam is placed on top of the liquid the oscillations of the free interface are significantly damped. The ability to reduce sloshing and associated splashing could find applications in numerous industrial processes involving liquid transport. 
Jean Cappello, Alban Sauret, Fran\c{c}ois Boulogne, Emilie Dressaire   and Howard A. Stone
physics.flu-dyn