水下导航拖曳载体水动力性能分析  

Hydrodynamic Performance Analysis of Underwater Navigation Towing Carrier

作　　者：田艳丽 TIAN Yanli(Shanghai Marine Equipment Research Institute,Shanghai 200031,China)

机构地区：[1]上海船舶设备研究所,上海200031

出　　处：《船舶工程》2020年第2期110-114,130,共6页Ship Engineering

摘　　要：三体船型适合作为水下导航系统的载体平台,其主体对整个载体的稳定性有较大影响。采用数值计算的方式分析主体封闭和开敞条件下,载体在静水拖曳直航工况下的水动力性能。结果表明:封闭主体与迎流有一个较大的接触角度,使得来流在主体前方的迎流区形成一个很大的流动停滞区,不利于载体的纵向稳定。当主体采用全开敞结构时,流体在整个舱室内几乎没有流动停滞区和飞溅,对应的载体稳定性相对较高,且压差阻力在总阻力中发挥主导作用。随着Fr值的增大,载体的横倾幅值不断增大,但变化不大。载体的纵向稳定性受Fr的影响较大,且在Fr的值接近0.428时,纵倾值突变到4.8°左右。The trimaran hull is a suitable carrier platform for the underwater navigation system. The main body of the trimaran has a great influence on the stability of the carrier. The hydrodynamic performance of the towing carrier under the condition of calm water direct route towing is calculated by numerical method with the main body in the closing and opening conditions. The result shows that there is a large contact angle between the closed body and the incoming flow, making the incoming flow form a large flow stagnation area in front of the main body, which is not conducive to the longitudinal stability of the carrier. When the main body adopts the fully open structure, the fluid has almost no flow stagnation area and splash in the whole cabin, and the corresponding stability is relatively high. And the differential pressure resistance dominates the total resistance. With the increase of value of Fr number, the rolling amplitude of the carrier increases, but the amplitude does not change much. The longitudinal stability of the carrier is greatly affected by Fr number. When the value of Fr number is around 0.428, the longitudinal value mutates to about 4.8°.

关 键 词：水下导航系统 拖曳载体 数值计算 水动力性能 

分 类 号：U666.1[交通运输工程—船舶及航道工程]