FDS-HCIB법을 이용한 고립파에 의한 물체 운동 모사
Simulation of Body Motion Caused by a Solitary Wave using the FDS-HCIB Method
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초록
Wave-body interaction is simulated using a developed code based on the flux-difference splitting scheme for immiscible andincompressible fluids and the hybrid Cartesian/immersed boundary method. A free surface is captured as a moving contact discontinuitywithin a fluid domain and an approximated Riemann solver is used to estimate the inviscid flux across the discontinuity. Immersedboundary nodes are identified inside an instantaneous fluid domain near a moving body, then dependent variables are reconstructed atthose immersed boundary nodes based on interpolation along local normal lines to the boundary. Free surface flows around anoscillating cylinder are simulated and the computed wave elevations are compared with other reported results. The generation of asolitary wave by a moving wave-maker is simulated and the time histories of wave elevations at two different points are compared withother results. The developed code is applied to simulate body motion of an elastically mounted circular cylinder as a solitary wavepasses the body. The force acting on an elastically mounted cylinder is compared with the force acting on a fixed cylinder. Gridindependency of the computed body motion is established based on a comparison of results using three different-size grids.
Abstract
Wave-body interaction is simulated using a developed code based on the flux-difference splitting scheme for immiscible andincompressible fluids and the hybrid Cartesian/immersed boundary method. A free surface is captured as a moving contact discontinuitywithin a fluid domain and an approximated Riemann solver is used to estimate the inviscid flux across the discontinuity. Immersedboundary nodes are identified inside an instantaneous fluid domain near a moving body, then dependent variables are reconstructed atthose immersed boundary nodes based on interpolation along local normal lines to the boundary. Free surface flows around anoscillating cylinder are simulated and the computed wave elevations are compared with other reported results. The generation of asolitary wave by a moving wave-maker is simulated and the time histories of wave elevations at two different points are compared withother results. The developed code is applied to simulate body motion of an elastically mounted circular cylinder as a solitary wavepasses the body. The force acting on an elastically mounted cylinder is compared with the force acting on a fixed cylinder. Gridindependency of the computed body motion is established based on a comparison of results using three different-size grids.
참고문헌 (13)
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