Vortical structures of a submarine with appendages are fully turbulent and complex. Thus, flow control and vortex manipulation are of great importance for the hydrodynamic performance and acoustic characteristics. Take the generic submarine model DARPA Suboff as the test case, a vortex tuning method based on the Liutex force field is proposed to manipulate the vorticity field. Viscous flow past the submarine model in straight-line motion at a Reynolds number of 1.2×10⁷ is achieved by solving the Reynolds averaged Navier-Stokes (RANS) equations. Multi-block structured mesh topology is used to discretize the computational domain, and the shear stress transport (SST) k - ω turbulence model is implemented to close the equations. The control of vortex is achieved by introducing additional source terms based on Liutex vortex definition and identification system to the RANS equations. The resistance acting on the submarine, flow field as well as the vortical structures are compared and analyzed. Results show that Liutex force model can effectively reduce the resistance by 9.31% and change the vortical structures apparently.

带有附肢的潜艇的涡旋结构完全是湍流和复杂的。因此，流动控制和涡流操纵对于流体动力学性能和声学特性非常重要。以通用潜艇模型DARPA Suboff为测试案例，提出了一种基于Liutex力场的涡旋调谐方法来操纵涡量场。通过求解雷诺平均纳维-斯托克斯 (RANS) 方程，可以实现以1.2×10 ⁷的雷诺数以直线运动通过潜艇模型的粘性流。多块结构网格拓扑用于离散化计算域，剪切应力传输 (SST) k - ω湍流模型用于闭合方程。涡流的控制是通过在 RANS 方程中引入基于 Liutex 涡流定义和识别系统的附加源项来实现的。对作用在潜艇上的阻力、流场以及涡流结构进行了比较和分析。结果表明，Liutex力模型能有效降低阻力9.31%，并明显改变涡流结构。