汽车油箱中油液晃动影响因素的数值分析  

Numerical analysis of influencing factors on sloshing of oil liquid in automobile fuel tank

作　　者：张恩慧 何仁[1] ZHANG Enhui;HE Ren(School of Automotive and Traffic Engineering,Jiangsu University,Zhenjiang,Jiangsu 212013,China;School of Mechanical Engineering,Inner Mongolia University of Science&Technology,Baotou,Inner Mongolia 014010,China)

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013 [2]内蒙古科技大学机械工程学院,内蒙古包头014010

出　　处：《江苏大学学报（自然科学版）》2018年第6期628-633,670,共7页Journal of Jiangsu University：Natural Science Edition

基　　金：江苏省重大科技成果转化项目(BA2016148);江苏省产学研合作前瞻性联合研究项目(BY2015064-09)

摘　　要：汽车在变工况行驶时,油液在油箱中大幅度晃动会引发油液晃动噪声、油气挥发量增多和高变速时中断供给燃油等现象.为了研究变工况下油液在油箱中的晃动规律,建立了三维有限元充液油箱模型.利用VOF法,分别模拟了油箱布置方式、充液量、油箱形状、加速度、加速度持续时间和油箱内压力对油液晃动产生的影响,获得了油液晃动过程中的位置图、相同油液位置的平均动压力曲线和指定点的总压力历程曲线.结果表明:影响油液晃动较大的因素为充液量、油箱形状、加速度持续时间和加速度,分别为油液晃动动压力、压力波动、重力势能冲击力和最大压力值的主要因素.When the automobile works under variable conditions,the large amplitude sloshing of oil liquid in fuel tank can lead to vibration noise,increasing evaporative emission and stopping supplying fuel at high speed.To investigate the law of oil liquid sloshing in fuel tank,the 3D finite element model of tank filled with oil liquid was established.The effects of tank arrangement way,filling amount,tank shape,acceleration,keeping acceleration time and tank pressure on oil liquid sloshing were simulated respectively,and the position diagram,the dynamic pressure curve of designated oil liquid position and the total pressure curve of designated point were obtained by volume of fluid(VOF)method.The simulation results show that the major influencing factors on oil liquid sloshing are filling amount,fuel tank shape,keeping acceleration time and acceleration,which are the primary factors of dynamic pressure of oil liquid sloshing,pressure fluctuation,impact force of gravity potential energy and the maximum pressure value,respectively.

关 键 词：汽车油箱 油液晃动 数值分析 影响因素 VOF法 

分 类 号：U464.136[机械工程—车辆工程]