Event Details

STOR-i and DSI invite you to a talk by Paul H Taylor, School of Earth and Oceans - The University of Western Australia

WATER WAVE IMPACTS AND HYPERSONICS - APPLICATIONS OF NEWTON’S MISTAKE

Why are violent wave impacts, on prismatic and cylindrical bodies on the deck of an FPSO or a container ship, or an oil platform with wave-in-deck, or violent tsunami wave impacts, all like the Apollo space capsule during re-entry or the X-15 rocket plane in hypersonic flight? Each of these flow-structure interaction problems occurs at high Froude or Mach number. Hence, the fluid dynamics is dominated by the appearance of violently projected fluid sheets or strong shocks and fast flows across the surface of the body. In this regime, the shallow water equations resemble those of high-speed compressible flow, and Newton’s mistake - the Newtonian or corpuscular flow model - is directly applicable. For wave impacts this is confirmed by extensive wave flume testing and CFD using OpenFOAM. Despite some inevitable limitations, this simple Newtonian theory provides a pen-and-paper force prediction tool for practical use in design.

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