Recently, the Liutex-based force field models are proposed and applied to some two-dimensional flows to explore the possibility of direct vortex control strategies. In this paper, we applied the Liutex-based centripetal force model to three-dimensional flow around a circular cylinder at Re = 3 900 . The turbulent flows around the three-dimensional cylinder are modeled by the delayed detached-eddy simulations based on the two-equation k - ω shear stress transport (SST) model. The cylinder flow without adding the force field model is simulated in the first place. The statistical flow quantities are compared with experimental data to validate the accuracy of the current numerical models. Then the force field model is applied to the momentum equation in a specific control region near the cylinder to study the change of flow field and hydrodynamic performance. The effect of different control region locations with the same force field strength is discussed to find out the most influenced locations on the drag and lift. Based on the screened control region, the influence source term strength is further studied. Variations on the global statistical flow quantities, local instantaneous three-dimensional flow structures are analyzed and discussed. It is concluded that the Liutex-based force field model can effectively change the hydrodynamic behavior of flow past a cylinder and may provide a new direction for performance improvement and optimization.

最近，基于 Liutex 的力场模型被提出并应用于一些二维流，以探索直接涡流控制策略的可能性。在本文中，我们将基于 Liutex 的向心力模型应用于Re = 3 900 的圆柱周围的三维流动。三维圆柱周围的湍流通过基于两个方程k - ω的延迟分离涡模拟进行建模剪应力传输 (SST) 模型。首先模拟不加力场模型的气缸流动。将统计流量与实验数据进行比较，以验证当前数值模型的准确性。然后将力场模型应用于圆柱附近特定控制区域的动量方程，研究流场和水动力性能的变化。讨论了具有相同力场强度的不同控制区域位置的影响，以找出对阻力和升力影响最大的位置。在筛选出的控制区域的基础上，进一步研究了影响源项强度。分析和讨论了全局统计流量的变化，局部瞬时三维流动结构。