Abstract: | The joint motion of an ideal fluid and a submerged circular cylinder is considered in the initial stage after an impact. The
dynamics of separation points on the inner free boundary (cavity boundary) and the shapes of the inner and outer free boundaries
of the fluid are determined. An asymptotic analysis of the inner free boundary near the separation points is made. The effects
of the Froude number, the pressure difference, and the cylinder immersion depth are investigated. |