X-plane submarines show better maneuverability as they have much longer span of control plane than that of cross plane submarines. In this study, captive model tests were conducted to evaluate the maneuverability of an X-plane submarine using Computational Fluid Dynamics (CFD) and a mathematical maneuvering model. For CFD analysis, SNUFOAM, CFD software specialized in naval hydrodynamics based on the open-source toolkit, OpenFOAM, was applied. A generic submarine Joubert BB2 was selected as a test model, which was modified by Maritime Research Institute Netherlands (MARIN). Captive model tests including propeller open water, resistance, self-propulsion, static drift, horizontal planar motion mechanism and vertical planar motion mechanism tests were carried out to obtain maneuvering coefficients of the submarine. Maneuvering simulations for turning circle tests were performed using the maneuvering coefficients obtained from the captive model tests. The simulated trajectory showed good agreement with that of free running model tests. From the results, it was proved that CFD simulations can be applicable to obtain reliable maneuvering coefficients for X-plane submarines.

X平面潜艇显示出更好的可操纵性，因为它们的控制平面跨度比交叉平面潜艇更长。在这项研究中，进行了俘获模型测试，以使用计算流体动力学（CFD）和数学机动模型来评估X面潜艇的机动性。对于CFD分析，使用了SNUFOAM，这是一种基于开源工具包OpenFOAM的专门用于海军流体动力学的CFD软件。选择了通用潜艇Joubert BB2作为测试模型，该模型由荷兰海事研究所（MARIN）进行了修改。进行了包括螺旋桨开水，阻力，自推进，静态漂移，水平平面运动机构和垂直平面运动机构测试在内的俘获模型试验，以获得潜艇的操纵系数。使用从圈养模型试验获得的操纵系数进行转弯试验的操纵模拟。模拟轨迹与自由运行模型测试显示出良好的一致性。从结果证明，CFD仿真可用于获得X飞机潜艇的可靠操纵系数。