基于微流驱动效应的汽车前风挡除水机制研究
发布时间:2018-01-10 11:30
本文关键词:基于微流驱动效应的汽车前风挡除水机制研究 出处:《机床与液压》2016年23期 论文类型:期刊论文
更多相关文章: 汽车前风挡 除水技术 微流驱动 液滴模型 COMSOL MULTIPHYSICSICS
【摘要】:基于微流驱动效应的优越性,提出了一种汽车前风挡玻璃振动除水技术。首先采用Stokes长波理论构建了液滴的二维数学模型,然后借助COMSOL MULTIPHYSICSICS多物理场分析软件对玻璃板上的液滴进行二维建模。研究了对称低频振动、正交对称低频运动、非对称振动和对称低频振动对液滴移动状态和移动速度的关系。仿真结果表明:液滴在振动激励下始终保持一种非对称的往复振荡运动,这种非对称运动合成为液滴在宏观上的位移,验证了微流驱动效应除水技术的可行性与有效性。
[Abstract]:Based on the advantages of microfluidic drive, a vibration water removal technology for front windshield glass is proposed. Firstly, a two-dimensional mathematical model of droplet is constructed by using Stokes long wave theory. Then using the COMSOL MULTIPHYSICSICS multi-physical field analysis software to model the liquid droplets on the glass plate, the symmetrical low-frequency vibration and the orthogonal symmetric low-frequency motion are studied. The relationship between asymmetric vibration and symmetric low frequency vibration on the moving state and velocity of liquid droplets. The simulation results show that the droplets always maintain an asymmetric reciprocating oscillatory motion under vibration excitation. The asymmetric motion synthesis is considered as the displacement of droplets on the macro level, which verifies the feasibility and effectiveness of the microfluidic drive technology for removing water.
【作者单位】: 华南理工大学机械与汽车工程学院;
【基金】:国家自然科学基金资助项目(51275175) 广东省自然科学基金资助项目(2014A030313254)
【分类号】:U463.855
【正文快照】: 0前言当前城市车辆广泛使用传统的机械式雨刮器[1]。但是传统的电动机械摇杆雨刮器直流电机体积巨大,其安装和维护不便;其次它的四连杆机构和刮水杆长时间工作后发生磨损会使杆件之间的运动发生干涉,严重时会刮伤风挡玻璃;第三,作为动力源的直流电机本身性能不稳定,电机可能烧,
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