罐式集装箱液体晃动过程数值模拟研究  

Numerical simulation for liquid sloshing process of a tank truck

作　　者：孙丽娜[1] 周国发[1] 

机构地区：[1]南昌大学化工机械教研室,南昌330031

出　　处：《振动与冲击》2012年第22期147-150,共4页Journal of Vibration and Shock

摘　　要：罐车制动过程中,液体晃动产生的水击压力对罐车安全性能影响很大。基于此,运用FLUENT软件中的VOF模块模拟罐车在制动过程中罐内液体水击产生过程,研究罐车液体充装率、密度和黏度对罐体水击压强影响。研究表明:制动过程中液体晃动水击内壁压力随着充装率增加先增大后减小,充装率为0.85时达到最大。且液体晃动水击内壁压力随着液体密度的增加而增大,随着液体黏度的增加而减小。按实际刹车制动过程液体晃动水击内壁压力计算液化气体罐式集装箱罐体最大应力较按JBT4781-2005标准增加24.9%,应依据实际刹车制动过程液体晃动水击内壁压力进行强度设计。The water hammer pressure generated by liquid sloshing in braking process of a tank truck has a great impact on the tanker safety. Based on this, the process of liquid sloshing in braking process of a tank truck was simulated with the volume of fluid （VOF） model of FLUENT, the influence of liquid filling ratio, density and viscosity on the water hammer pressure of the tanker during braking process was studied. The study results showed that when the liquid filling ratio increases, the water hammer pressure of the tank truck increases firstly and decreases afterwards, the maximum＂ value appears when the liquid filling ratio is 0.85 ; the water hammer pressure caused by liquid sloshing increases with increase in liquid density, but it decreases with increase in viscosity; compared with the maximum stress of a liquefied gas tank container calculated with JBT4781-2005 standards, the maximum stress calculated with the hammer pressure in the actual braking process of the tank truck increases by 24.9% ; the strength design should be done based on the water hammer pressure caused by liquid sloshing in the actual braking process of a tank truck.

关 键 词：液化气体罐式集装箱 VOF 液体晃动 水击 

分 类 号：U469.61[机械工程—车辆工程]