双桨船附体阻力尺度效应

摘要/Abstract

摘要：

摘要：以光滑平板为研究对象，探索了高雷诺数时的数值计算方法.在此基础上，以DTMB5415裸船体和全附体模型为研究对象，忽略自由液面效应，采用RANS(Reynolds Averaged NavierStokes)方法结合SST k－ω(ShearStress Transport k－ω)模型计算了包含实尺度在内的多种缩尺模型的船舶黏性流场，详细分析了双桨水面舰船附体阻力的尺度效应作用.通过研究发现：不同的附体，其阻力尺度效应程度并不相同；对于双桨船，附体阻力占整个船体阻力的份额较大，其尺度效应作用不可忽略，可以引入附体阻力尺度效应修正因子来进行模型到实船附体阻力的换算，附体阻力尺度效应修正因子与雷诺数的对数近似成三次多项式函数的关系.

关键词: , 双桨船, 附体阻力, 尺度效应, 修正因子, 数值计算

Abstract:

Abstract： A flat plate was studied for the validation of the numerical method in high Reynolds number condition, based on which, the viscous flow field of different scale model including full scale ship of DTMB5415 bare and appendaged hull were solved numerically by RANS (Reynolds Averaged Navier-Stokes) method and SST k－ω (Shear-Stress Transport k-ω) turbulence model without considering the free surface effect, and the scale effect of appendage resistance of twinscrew ship was analyzed in detail. It shows that the scale effect is quite different for individual appendages. The scale effect of appendage resistance cannot be ignored due to the large proportion in total resistance for twinscrew ship. The appendage resistance correction factor was introduced for the extrapolation of appendage resistance from model scale to full scale ship, and it is found that the cubic polynomial function is fit perfectly for the relationship of the appendage resistance correction factor and the Reynolds number in the logarithmic scales.
Key words：

Key words: twin-screw ship, appendage resistance, scale effect, correction factor, numerical calculation

中图分类号:

U 661.31

王展智1，熊鹰1，孙海涛2，黄政1，王睿1. 双桨船附体阻力尺度效应[J]. 上海交通大学学报（自然版）, 2015, 49(02): 255-261.

WANG Zhanzhi1,XIONG Ying1，SUN Haitao2,HUANG Zheng1，WANG Rui1. Scale Effect of Appendage Resistance of TwinScrew Ship[J]. Journal of Shanghai Jiaotong University, 2015, 49(02): 255-261.

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