纵向激励下防波板组合形式对罐箱液体晃动的影响

The Influence of Different Baffles Arrangement on Liquid Sloshing in Container Under Longitudinal Excitation

基于VOF(volume of fluid)模型采用Fluent软件,模拟了罐车突然制动时罐箱内液体的晃动过程.对比罐箱内液体晃动对前后封头的压强变化,结果表明,液体主要对前封头有较大的冲击载荷.设置防波板可有效减小罐箱内液体的晃动,降低液体对封头的冲击力,提高罐箱的安全性.研究了5块相同的弓形防波板在全下布置、全上布置、上下交错、左右交错4种不同的布置形式在不同充液率时对前封头的冲击,结果表明,在较低充液率时防波板左右交错和全下布置均能降低液体对前封头的冲击载荷,而防波板上下交错和全上布置的防波效果较差.随着充液率的升高,防波板左右交错的效果逐渐变差.在不同的充液率下,防波板全下布置均有较好的防波效果.

FLUENT software was adopted to simulate the sloshing process of liquid in container under the sud- den braking condition based on VOF （volume of fluid） model. The pressure variation of front and back head was compared, which showed that the sloshing liquid mainly had a greater impact on the front head. Baffles could effectively weaken the sloshing in the container, reduce the impact on the head and improve the contain- er safety. The liquid impact on front head was studied in the condition of different filling ratio for different baf- fle arrangement（ all down, all up, up and downinterlaced, left and right interlaced） of five same arc baffles. Results show that the arrangement style of left and right interlaced ,all down could reduce impact load on front head for low filling ratio, however the arrangement style of up and downinterlaced all up had poor anti-wave effect. The anti-wave effect of the arrangement style of left and right interlaced became poorer and poorer with the increment of filling ratio. Compared with other arrangement style, the arrangement style of all down had better anti-wave effect.