Lattice Boltzmann simulation of the deformation and breakup of a droplet impinging on a circular cylinder

摘要：

　　The deformation and breakup behavior of a 2D droplet impinging on a solid cylinder was presented by using a multicomponent lattice Boltzmann method (LBM) with pseudopotential model.The impact of Bond number (Bo), surface wettability and the size of the cylinder on the behavior of the droplet were taken into account.Results show that the behaviors of the droplet can be classified into three types: 1) staying on the top of the cylinder;2) breaking up into two daughter droplets and merging again;3)breaking up without the merging process.Two critical Bond numbers (Bob-cri and Bod-cri) are defined to classify the three types.It is found that Bob-cri increases with the increase of contact angle, while Bod-cri does the opposite.When the size of the cylinder was increased, Bob-cri increases respectively;however, Bod-cri doesnt show such relation with the cylinder size.It also shows that it is an effective way to control the evolution of the droplet by setting the wettability of the cylinder surface properly.

关键词： Multicomponent lattice Boltzmann method deformation and breakup of droplet wettability critical Bond number

作者: Fan Yang Yuhang Fu Wanyu Chen Yonghua Yan Xueyan Guo Ren Dai

作者单位: School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai, Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, Shanghai, China;D

会议类型: 国际会议

会议名称: The Second Conference of Global Chinese Scholars on Hydrodynamics(第二届全球华人水动学学术会议)

会议地点: 江苏 无锡

会议语种:英文

页码: 295-302

在线出版日期: 2016-11-11（万方平台首次上网日期，不代表论文的发表时间）