变工况下车辆燃油箱多孔挡板抑浪机理研究

doi:10.3969/j.issn.1004-132X.2022.11.015

中国机械工程 ›› 2022, Vol. 33 ›› Issue (11): 1377-1385.DOI: 10.3969/j.issn.1004-132X.2022.11.015

变工况下车辆燃油箱多孔挡板抑浪机理研究

孙船斌1,2;沈民民1,2;童宝宏1,2;黄虎3;张坤3

1.安徽工业大学机械工程学院，马鞍山，243032
2.特种重载机器人安徽省重点实验室，马鞍山，243032
3.安徽福马汽车零部件集团有限公司，马鞍山，243032

出版日期:2022-06-10 发布日期:2022-07-01
通讯作者: 童宝宏（通信作者），男，1978年生，教授。研究方向为低碳制造与摩擦学、微量润滑机理、液滴动力学、流体界面物理力学。发表论文70余篇。E-mail:bh_tong@163.com。
作者简介:孙船斌，男，1988年生，讲师、博士。研究方向为汽车节能减排、智能车辆动力学及控制、多相流。E-mail:s_chuanbin@126.com。
基金资助:
国家自然科学基金(51975005)；安徽省自然科学基金(2008085ME148,KJ2020A0241)

Study on Wave Suppression Mechanism of Porous Baffles in Vehicle Fuel Tanks under Variable Conditions

SUN Chuanbin1,2;SHEN Minmin1,2;TONG Baohong1,2;HUANG Hu3;ZHANG Kun3

1.College of Mechanical Engineering,Anhui University of Technology,Maanshan,Anhui,243032
2.Auhui Province Key Laboratory of Special Heavy Load Robot，Maanshan,Anhui,243032
3.Anhui Fuma Auto Parts Group Co.,Ltd.,Maanshan,Anhui,243032

Online:2022-06-10 Published:2022-07-01

摘要/Abstract

摘要： 车辆的变加速度工况会导致燃油剧烈晃动，发生供给中断甚至损坏燃油箱结构等现象。采用基于动网格耦合VOF的数值模拟方法和构建的水平激励试验平台，从数值与试验两个方面来分析燃油晃动过程。以某重载商用车辆燃油箱内多孔挡板为例，系统分析该挡板抑制燃油晃动的效果，探讨了多孔挡板抑浪的机理。研究结果表明：多孔挡板能够显著减小壁面压力、自由液面高度及液面轮廓起伏；燃油箱运动瞬间，挡板壁面出现瞬态局部高压，但对挡板结构的疲劳损坏程度较低；多孔挡板的孔隙将未被挡板实体部分阻碍的小部分流体分割成多股射流，急剧减缓行进波传递；多孔挡板附近流场产生涡旋，涡旋聚集和耗散能量，降低流体运动速度，达到抑制燃油剧烈晃动的目的。

关键词: 车辆燃油箱, 多孔挡板, 瞬态高压, 抑浪机理, 涡旋

Abstract: The fuel would shake violently, and interrupt the supply, or even the fuel tank structure would be damaged in variable acceleration. The fuel sloshing process was analyzed from numerical values and experiments based on the numerical simulation of dynamic grid coupled VOF, and built a horizontal excitation test platform. Taking porous baffles in the tank of a heavy-duty commercial vehicle for example, the baffles were systematically analyzed to suppress fuel sloshing and the wave suppression mechanism was discussed by porous baffles. Studies show that the porous baffle may reduce the wall pressure, the free liquid surface height and the liquid surface profile fluctuation. The transient local high pressure appears on the baffle walls during the movement of the fuel tanks, but the fatigue damage against the baffle structure is low. The pores of the baffle divide the small part of the fluid into multiple jets, which sharply slows down the transmission of the traveling wave. The flow field near the porous baffle produces vortex which accumulate and dissipate energy, and reduce the fluids velocity. It may achieve the purpose of restraining the violent shaking.

Key words: vehicle fuel tank, porous baffle, transient high pressure, wave suppression mechanism, vortex

中图分类号:

孙船斌, 沈民民, 童宝宏, 黄虎, 张坤. 变工况下车辆燃油箱多孔挡板抑浪机理研究[J]. 中国机械工程, 2022, 33(11): 1377-1385.

SUN Chuanbin, SHEN Minmin, TONG Baohong, HUANG Hu, ZHANG Kun. Study on Wave Suppression Mechanism of Porous Baffles in Vehicle Fuel Tanks under Variable Conditions[J]. China Mechanical Engineering, 2022, 33(11): 1377-1385.

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变工况下车辆燃油箱多孔挡板抑浪机理研究

Study on Wave Suppression Mechanism of Porous Baffles in Vehicle Fuel Tanks under Variable Conditions

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