On the motion of a falling circular cylinder in flows after water entry

Xujian Lyu, Zhaoyu Wei, Hui Tang, T. H. New, Hua Li

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

5 Citations (Scopus)


This paper reports an experimental investigation on the motion of a circular cylinder after it horizontally enters into a water flow with a certain slamming speed. A smart cylinder-releasing mechanism is designed to enable repeatable release of the cylinder. A high-speed camera is used to record the cylinder's motion. The effects of three factors are investigated, including the cylinder-to-water density ratio, water speed and slamming speed of the cylinder. Data for several cases with either a solid cylinder or a hollow cylinder are obtained and compared. Variations of both horizontal and vertical displacements against these factors are presented and analyzed. It is found that the trajectories of the hollow cylinder collapse at the initial stage of submerging in water when the velocity ratios are the same.
Original languageEnglish
Title of host publicationInternational Conference on Experimental Mechanics 2014
ISBN (Electronic)9781628413885
Publication statusPublished - 1 Jan 2015
EventInternational Conference on Experimental Mechanics 2014, ICEM 2014 - Holiday Inn Atrium Hotel, Singapore, Singapore
Duration: 15 Nov 201417 Nov 2014


ConferenceInternational Conference on Experimental Mechanics 2014, ICEM 2014


  • Freely falling circular cylinder
  • High-speed camera
  • Water tunnel

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this