This paper investigates the influence of the Circulating Water Channel (CWC) side wall and support struts on the hydrodynamic coefficient prediction for Autonomous Underwater Vehicles (AUVs) experiments. Computational Fluid Dynamics (CFD) method has been used to model the CWC tests. The hydrodynamic coefficients estimated by CFD are compared with the prediction of experiments to verify the accuracy of simulations. In order to study the effect of side wall on the hydrodynamic characteristics of the AUV in full scale captive model tests, this paper uses the CWC non-dimensional width parameters to quantify the correlation between the CWC width and hydrodynamic coefficients of the chosen model. The result shows that the hydrodynamic coefficients tend to be constant with the CWC width parameters increasing. Moreover, the side wall has a greater effect than the struts.

本文研究了循环水通道（CWC）侧壁和支撑杆对自动水下航行器（AUVs）实验的水动力系数预测的影响。计算流体动力学（CFD）方法已用于对CWC测试建模。将通过CFD估计的流体力学系数与实验预测进行比较，以验证模拟的准确性。为了在全尺寸俘获模型试验中研究侧壁对AUV的水动力特性的影响，本文使用CWC无量纲宽度参数来量化所选模型的CWC宽度与水动力系数之间的相关性。结果表明，随着CWC宽度参数的增加，水动力系数趋于恒定。此外，