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首页> 外文期刊>The Proceedings of the International Offshore and Polar Engineering Conference >Modeling of Flow around FPSO Hull Sections Subject to Roll Motions: Effect of the Separated Flow around Bilge Keels
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Modeling of Flow around FPSO Hull Sections Subject to Roll Motions: Effect of the Separated Flow around Bilge Keels

机译：受横摇运动影响的FPSO船体截面周围流动的建模：舱底龙骨周围分离流动的影响

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The objective of this research is to understand the physics of the separated unsteady viscous flow over the bilge keels of an FPSO hull subject to roll motions and to predict the corresponding hydrodynamic coefficients. A numerical scheme which is based on the Finite Volume Method (FVM) for the solution of the 2-D Navier-Stokes equations is presented (NS2D). The scheme is validated for a submerged hull roll problem and applied to an FPSO hull subject to roll motions with or without bilge keels. The effects of the bilge keel size and orientation on the hydrodynamic coefficients are investigated. Moreover, a Boundary Element Method (BEM) based potential solver is developed in order to investigate the effects of the non-linear free-surface boundary conditions on the predictions.
机译：这项研究的目的是了解经受横摇运动的FPSO船体的船底龙骨上分离的非稳态粘性流的物理性质，并预测相应的水动力系数。提出了一种基于有限体积法（FVM）求解二维Navier-Stokes方程的数值方案（NS2D）。该方案针对水下船体侧倾问题进行了验证，并应用于带有或不带有船底龙骨的侧倾运动的FPSO船体。研究了舱底龙骨的尺寸和方向对流体动力系数的影响。此外，为了研究非线性自由表面边界条件对预测的影响，开发了基于边界元方法（BEM）的电势求解器。

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