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CFD Analysis of Two-Dimensional Floating Body with Moon Pool under Forced Heave Motion

문풀을 가지는 2차원 부유체의 강제 상하동요에 대한 CFD 해석

  • Heo, Jae-Kyung (Shipbuilding & Offshore Research Department, STX Institute of Technology) ;
  • Park, Jong-Chun (Department of Naval Architecture and Ocean Engineering, Pusan National University) ;
  • Kim, Moo-Hyun (Department. of Civil Engineering, Texas A&M University)
  • 허재경 (STX종합기술원 조선해양연구실) ;
  • 박종천 (부산대학교 조선해양공학과) ;
  • Received : 2011.03.08
  • Accepted : 2011.04.22
  • Published : 2011.04.30

Abstract

A two-dimensional floating body with a moon pool under forced heave motion, including a piston mode, is numerically simulated. A dynamic CFD simulation is carried out to thoroughly investigate the flow field around a two-dimensional moon pool over various heaving frequencies. The numerical results are compared with experimental results and a linear potential program by Faltinsen et al. (2007). The effects of vortex shedding and viscosity are investigated by changing the corner shapes of the floating body and solving the Euler equation, respectively. The flow fields, including the velocity, vorticity, and pressure fields, are discussed to understand and determine the mechanisms of wave elevation, damping, and sway force.

Keywords

Moonpool;Piston mode;Forced-heave motion;Dynamic simulation

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