计算流体力学
雷诺平均Navier-Stokes方程
推力
海洋工程
流量(数学)
机械
半径
类型(生物学)
航空航天工程
计算机科学
工程类
物理
地质学
古生物学
计算机安全
作者
Baowei Song,Youjiang Wang,Wenlong Tian
标识
DOI:10.1016/j.oceaneng.2015.04.074
摘要
The rim driven thrusters (RDT) have been designed both in hub-type and hubless type, but few comparison studies have been performed. This paper investigates the difference between open water performance of hub-type and hubless RDT by means of computational fluid dynamics (CFD) analysis. The Reynolds Averaged Navier–Stokes (RANS) equations were numerically solved by the commercial code CFX 14.0 with a multiple frames of reference (MFR) method. The accuracy of the numerical method was validated through verification and validation studies. Four pairs of hub-type and hubless rim driven thrusters having different hub radius were tested. The simulation results demonstrate that the hubless RDT efficiency is higher than that of the hub-type RDT. The hubless RDT also has a larger thrust, torque and a smaller thrust ratio. The reasons for the difference were also discussed in the present paper. The flow field details were also presented.
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