INTERACTION OF LAMINAR FAR WAKE WITH A FREE-SURFACE

Wave disturbances caused by the uniform translatory motion of a submer ged body on or beneath the free surface of a viscous fluid are investi gated analytically. The submerged body is idealized as an Oseenlet or an Oseen doublet, and exact solutions in closed integral forms are obt ained. Based on these exact solutions, asymptotic representations of t he wave amplitude for large Reynolds numbers based on the deep-water w avelength at large distances downstream of the body are derived. The r esults obtained show explicitly the effect of the laminar wake on the amplitude and the phase of the surface waves thus created. (C) 1996 Am erican Institute of Physics.