水下航行体拖缆盘绕器阻力特性分析及优化设计

Analysis resistance characteristics and optimum design of underwater vehicle cable winder

水下航行体拖带电缆后,在航行过程中,为了提高外挂拖缆安装可靠性,减小拖缆盘绕器对航行体自身的航行姿态影响,须对拖缆盘绕器进行减阻设计。针对该减阻要求,在盘绕器圆形截面基础上,以迎流阻力最小为目标对其截面线型进行优化。通过采用CFX软件,对盘绕器航行过程中的阻力进行有限元仿真,计算出前后对称水滴型截面的盘绕器相对于圆形截面盘绕器减阻最大可达36.5%,减阻效果明显。试验结果也表明,前后对称水滴型截面盘绕器锁定可靠,解锁顺畅,从而验证了仿真结果。

In order to improve the installation reliability of the external towing cable and reduce the influence of the towing winder on the navigation attitude of the underwater vehicle,drag reduction of the towing winder is necessary during sailing.According to the requirement of drag reduction,the cross-section profile of the winder is optimized on the basis of its circular cross-section,aiming at minimizing the drag of the winder on the underwater vehicle.By using CFX software to simulate the drag of the winder during sailing,it is calculated that the maximum drag reduction of the symmetrical water droplet cross-section winder is 36.5%compared with the circular cross-section winder,and the drag reduction effect is obvious.The test results also show that the symmetrical water droplet cross-section winder has reliable locking and smooth unlocking,which verifies the simulation results.