串列螺旋桨空化特性数值分析  

Numerical Simulation Analysis of Cavitation Performance of Tandem Propeller

作　　者：杜晓旭[1] 张正栋[1] Du Xiaoxu;Zhang Zhengdong(School of Marine Science and Technology,Northwestern Polytechnical University,Xi′an 710072,China)

机构地区：[1]西北工业大学航海学院,陕西西安710072

出　　处：《西北工业大学学报》2018年第3期509-515,共7页Journal of Northwestern Polytechnical University

基　　金：国家自然科学基金(11302176)资助

摘　　要：运用计算流体力学(CFD)理论,基于均质多相流雷诺平均N-S(RANS)方程,结合SST k-ω湍流模型及Z-G-B(Zwart-Gerber-Belamri)空化模型,首先对CLB4-55-1串列螺旋桨的非空化定常水动力特性及对NACA66翼型的定常流空化性能进行数值模拟,验证计算方法的可靠性;然后对该串列螺旋桨的空化性能展开数值模拟与分析。计算结果表明,所建立数值计算模型可以较为精确地预报串列螺旋桨的空化性能;串列桨的空化特性相较于单桨基本一致,但是在某些特定进速系数及空化数时,后桨的空化现象较前桨更为明显;当进速系数变大或空化数变大时,空化现象均会消失。The steady non cavitation hydrodynamic characteristics of CLB4-55-1 tandem propeller and the steady cavitation flows of NACA66 hydrofoil are numerically studied firstly based on the RANS equations of homogeneous multiphase using CFD theory,combined with the SST k-ωturbulent model and Z-G-B cavitation model.Numerical simulation results are in good agreement with the experimental results,which indicates that the numerical method is reliable and accurate.Then,the cavitation performance of the tandem propeller are numerical simulated and analyzed.The results show that the computational model can predict the cavitation performance of tandem propeller accurately.The cavitation performance of tandem propeller is nearly the same as single propeller,however,the cavitation phenomenon of back propeller is greater than the head propeller at certain advance coefficient and cavitation number.The cavitation phenomenon will disappear with the increase of the advance coefficient or the cavitation number.

关 键 词：串列螺旋桨 空化特性 CFD 混合网格 MATLAB 网格划分 湍流模型 

分 类 号：U664.33[交通运输工程—船舶及航道工程]