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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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For long slender offshore structures, such as cables and pipe lines, their interaction with surrounding fluid flow becomes an important issue for global design of ocean systems. We employ a long circular cylinder as a representative case of slender offshore structure. A flexibly mounted cylinder in cross-flow generates complex vortex shedding and results in oscillation of the structure. In this paper, flow behind a circular cylinder at Re=100 is simulated. The vortex shedding pattern and flow induced motion are examined in the cross flow configuration as well as with various yaw-angled configurations. The“Lock-in”phenomenon is also observed when reduced velocity is approximately 4.0. The MAC Grid system, which is the typical grid system for Cartesian mesh and pressure correction methods, are used for solving the incompressible Navier-Stokes equations. Predictor/Corrector method is applied for obtaining a non-linear response of structure at the flexibly mounted. The existance and motion of the body is represented by the immersed boundary technique.
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Abstract
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참고문헌 (12)
참고문헌 신청
1. [학술지(정기간행물)] - Ahn, H. T / 2006 / Strongly coupled flow/structure interactions with a geometrically conservative ALE scheme on general hybrid meshes / Journal of Computational Physics 219 (2) : 671 ~ 696
2. [학술지(정기간행물)] - Ding, H / 2007 / Numerical simulation of flows around two circular cylinders by mesh-free least square-based finite difference method / International Journal for Numerical Methods in Fluids 53 (2) : 305 ~ 332
3. [학술지(정기간행물)] - Fadlun, E.A / 2000 / Combined Immersed-Boundary Finite-Difference Methods for Three-Dimensional Complex Flow Simulations / Journal of Computational Physics 161 (1) : 35 ~ 60
4. [학술지(정기간행물)] - Harlow, F. H / 1965 / Numerical Calculation of Time-Dependent Viscous Incompressible Flow of Fluid with Free Surface / Physics of Fluids 8 (12) : 2182 ~ 2189
5. [학술지(정기간행물)] - Kim, J / 2001 / An Immersed-Boundary Finite-Volume Method for Simulations of Flow in Complex Geometries / Journal of Computational Physics 171 (1) : 132 ~ 150
2. [학술지(정기간행물)] - Ding, H / 2007 / Numerical simulation of flows around two circular cylinders by mesh-free least square-based finite difference method / International Journal for Numerical Methods in Fluids 53 (2) : 305 ~ 332
3. [학술지(정기간행물)] - Fadlun, E.A / 2000 / Combined Immersed-Boundary Finite-Difference Methods for Three-Dimensional Complex Flow Simulations / Journal of Computational Physics 161 (1) : 35 ~ 60
4. [학술지(정기간행물)] - Harlow, F. H / 1965 / Numerical Calculation of Time-Dependent Viscous Incompressible Flow of Fluid with Free Surface / Physics of Fluids 8 (12) : 2182 ~ 2189
5. [학술지(정기간행물)] - Kim, J / 2001 / An Immersed-Boundary Finite-Volume Method for Simulations of Flow in Complex Geometries / Journal of Computational Physics 171 (1) : 132 ~ 150
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UCI(KEPA) : I410-ECN-0101-2013-559-001493191