CFD modelling of free-flight and auto-rotation of plate type debris
CFD modelling of free-flight and auto-rotation of plate type debris
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DOI：
10.12989/was.2010.13.2.169
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发表时间：
2010-03
影响因子：
1.6
通讯作者：
B. Kakimpa;D. Hargreaves;J. Owen;P. Martinez-Vazquez;C. Baker;M. Sterling;A. Quinn
中科院分区：
文献类型：
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作者：
B. Kakimpa;D. Hargreaves;J. Owen;P. Martinez-Vazquez;C. Baker;M. Sterling;A. Quinn
本文描述了在对风载板状物体的空气动力学行为进行建模时，耦合计算流体动力学（CFD）和刚体动力学（RBD）的应用。采用非定常二维和三维雷诺平均纳维 - 斯托克斯（RANS）CFD模型来模拟静态、强制旋转、自动旋转和自由飞行的板周围的非定常且不均匀的流场。自动旋转现象本身受涡旋脱落的强烈影响，采用可实现的k - ε湍流建模方法，并对流场变量使用二阶隐式时间推进格式以及等阶或更高阶的平流格式。将CFD代码与RBD求解器按顺序耦合，可以对板的流固耦合（FSI）行为以及这种行为如何影响板的运动进行更详细的建模。将结果与自动旋转板的风洞实验以及现有的三维分析模型进行了比较。
This paper describes the use of coupled Computational Fluid Dynamics (CFD) and Rigid Body Dynamics (RBD) in modelling the aerodynamic behaviour of wind-borne plate type objects. Unsteady 2D and 3D Reynolds Averaged Navier-Stokes (RANS) CFD models are used to simulate the unsteady and non-uniform flow field surrounding static, forced rotating, auto-rotating and free-flying plates. The auto-rotation phenomenon itself is strongly influenced by vortex shedding, and the realisable k-epsilon turbulence modelling approach is used, with a second order implicit time advancement scheme and equal or higher order advection schemes for the flow variables. Sequentially coupling the CFD code with a RBD solver allows a more detailed modelling of the Fluid-Structure Interaction (FSI) behaviour of the plate and how this influences plate motion. The results are compared against wind tunnel experiments on auto-rotating plates and an existing 3D analytical model.