电磁力控制潜艇近水面兴波绕流流场的数值研究  

Numerical simulation of the near-surface wave-making flow structure around submarine via Lorentz force control

作　　者：纪延亮[1] 周本谋[1] 黄亚冬[1] JI Yan-liang;ZHOU Ben-mou;HUANG Ya-dong(Science and Technology on Transient Physics Laboratory,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学瞬态物理重点实验室,南京210094

出　　处：《船舶力学》2018年第4期387-396,共10页Journal of Ship Mechanics

基　　金：瞬态物理国家重点实验室基金(kx21373)

摘　　要：文章基于VOF方法,对Froude数(Fr)等于0.2时近水面不同潜深的潜艇绕流流场结构进行了仿真,主要研究了不同潜深的兴波特性及水下绕流艇身周围的流场结构特点。结果表明,接近水面时,艇身周围的流场结构受到兴波的影响而变得更加复杂,潜艇阻力和各方向力的扰动有明显增加。使用流向电磁力对潜艇头部和指挥台进行控制,加力后潜艇绕流流场结构发生改变,随着电磁力作用系数的增大,阻力显著下降,同时各方向力的扰动被抑制,整体稳定性有所提高。最后对头部和指挥台进行独立控制,对比结果表明头部控制在减阻减振方面的效果要好于指挥台控制。The near-surface flow around submarine is simulated by the method of VOF(Volume of Fraction).Different depths of submergence are investigated at the Froude number of 0.2.Both the free surface wave pattern and the flow field structure around the submarine are analyzed.The results illustrate that the flow field around submarine becomes more complicated as the effect of wave-making.Both the resistance and spatial force fluctuation increase when the model is close to the free surface.After that,the streamwise Lorentz force is applied on the head and appendage to control the near-wall flow field structure.The results demonstrate that the Lorentz force changes the flow field structure around submarine,which could decrease the resistance obviously.Meanwhile,the spatial force fluctuation is suppressed.As a comparison,the Lorentz force works on the head and appendage respectively,a better result is obtained for the case of head control.

关 键 词：潜艇绕流 近水面兴波 电磁力控制 减阻减振 

分 类 号：O361.5[理学—流体力学]