Impact of a circular disk with flat, concave and convex bottom on shallow water

Introduction. Impact of a solid body on water surface has been a subject of extensive research owing to its practical importance in applications such as slammimg, gliding, hydroplane landing, etc. A considerable body of theoretical results has been obtained within the realm of ideal-fluid model, with effects of air neglected, both in deep water (classic Wagner problem and its modifications) and in shallow water [1 – 4]. However, for flat-nosed bodies the dynamics o