Spray formation and structural deformation during the oblique impact of a flexible plate on a quiescent water surface

An Wang, Hyun Tae Kim, Kit Pan Wong, Miao Yu, Kenneth T. Kiger, James H. Duncan

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

The oblique impact of a flexible and a nearly rigid plate on a quiescent water surface is studied experimentally. Both plates are 122 cm long by 38 cm wide and are mounted with a 5° upward pitch angle and a 10° lateral roll angle. The plates are attached to a dual-axis instrument carriage. The horizontal and vertical components of the carriage (plate) motion are driven by servo motors and controlled by a single computer-based feedback system, which is set with a single trajectory that is traversed for all impact speeds. The transient strain at multiple locations on the upper surface of the plate is measured with optical fiber Bragg grating sensors and the out-of-plane deformation is measured with a photographic method. A cinematic laser-induced fluorescence technique is used to measure the water spray generated during the impact. Two types of spray are observed and several aspects of the spray behavior are found to be noticeably affected by the deformation of the plate. The maximum deflection along the plate's upper long edge is found to increase almost linearly with impact velocity.

Original languageEnglish
Pages (from-to)154-164
Number of pages11
JournalJournal of Ship Research
Volume63
Issue number3
DOIs
StatePublished - 2019

Keywords

  • Fluid-structure interaction
  • Slamming
  • Spray

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