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首页> 外文会议>International offshore and polar engineering conference;ISOPE-2009 >Numerical Simulations of Viscous Flows with Induced Moving Discs in a Periodic Lid-Driven Cavity
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Numerical Simulations of Viscous Flows with Induced Moving Discs in a Periodic Lid-Driven Cavity

机译：周期盖驱动腔中诱导运动圆盘粘性流动的数值模拟

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This paper reports the results of direct numerical simulation of themotion of a two-dimensional neutrally buoyant circular cylinder in aperiodic lid-driven cavity by using multigrid fictitious boundarymethod (MFBM) coupled with finite element method. The MFBM isbased on a regular rectangular grid. The flow is computed by a finiteelement solver and the solid cylinder is allowed to move freely throughthe computational mesh which can be chosen independently from thecylinder of size and number. The interaction between the fluid and thecylinder is taken into account by the MFBM in which an explicitvolume based calculation for the hydrodynamic forces is integrated.The main advantage of the MFBM is that the solid cylinder can movefreely through the computational mesh for the fluid part which has notto change in time. Comparisons with experimental results indicate thatthe present numerical method can capture complex flow-cylinderinteraction phenomena, and obtain the detailed results of trajectories,translation and rotation of the free neutrally buoyant cylinder in a liddrivencavity flow.
机译：本文利用有限元方法结合多重网格虚拟边界方法（MFBM），对二维非中性浮力圆柱在非周期性盖驱动腔内运动的直接数值模拟结果进行了报道。 MFBM基于规则的矩形网格。流量由有限元求解器计算，并允许圆柱体自由移动通过计算网格，该网格可以独立于大小和数量的圆柱体进行选择。 MFBM考虑了流体与缸体之间的相互作用，其中集成了基于显式体积的流体动力计算。MFBM的主要优点是，实心圆柱体可以自由地通过计算网格来移动流体部分。不要改变时间。与实验结果的比较表明，该数值方法可以捕获复杂的流-缸相互作用现象，并获得盖驱动腔中自由中性浮力缸的轨迹，平移和旋转的详细结果。

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