Journal of computational fluids engineering (한국전산유체공학회지)

Korean Society of Computational Fluids Engineering (한국전산유체공학회)
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FLUID-BODY INTERACTION ANALYSIS OF FLOATING BODY IN THREE DIMENSIONS

3차원 부유체의 유체-물체 연성해석

  • Go, G.S. (School of Naval Architecture and Ocean Engineering, Ulsan Univ.) ;
  • Ahn, H.T. (School of Naval Architecture and Ocean Engineering, Ulsan Univ.)
  • 고광수 (울산대학교 조선해양공학부) ;
  • 안형택 (울산대학교 조선해양공학부)
  • Received : 2015.05.18
  • Accepted : 2015.06.23
  • Published : 2015.06.30
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Abstract

Fluid-body interaction analysis of floating body with six degree-of-freedom motion is presented. In this study, three-dimensional incompressible Navier-Stokes equations are employed as a governing equation. The numerical method is based on a finite-volume approach on a cartesian grid together with a fractional-step method. To represent the body motion, the immersed boundary method for direct forcing is employed. In order to simulate the coupled six degree-of-freedom motion, Euler's equations based on rigid body dynamics are utilized. To represent the complex body shape, level-set based algorithm is utilized. In order to describe the free surface motion, the volume of fluid method utilizing the tangent of hyperbola for interface capturing scheme is employed. This study showed three different continuums(air, water and body) are simultaneously simulated by newly developed code. To demonstrate the applicability of the current approach, two different problems(dam-breaking with stationary obstacle and water entry) are simulated and all results are validated.

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References

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