%0 Journal Article %T Existence and Uniqueness Results for Double-Free-Boundary Problems in Fluid Dynamics %A Andrew Acker III %J Mathematics %D 2012 %I arXiv %X We study a general double-free-boundary problem which models a stationary flow in a general potential-energy terrain. The existence theorem generalizes (by a different proof) a result of A. Beurling. We also obtain local uniqueness results under stronger assumptions. %U http://arxiv.org/abs/1204.1070v3