  We carried out a fluid dynamical simulation for a forced dripping faucet
system using a new algorithm that was recently developed. The simulation shows
that periodic external forcing induces transitions from chaotic to periodic
motion and vice versa. We further constructed an improved mass-sprig model for
the same system on the basis of data obtained from the fluid dynamical
computations. A detailed analysis of this simple model demonstrated that the
periodic motion is realized after a homoclinic bifurcation, although a stable
periodic orbit is generated via a Hopf bifurcation which occurs just after a
saddle node one.
