为提高工程流体力学课程的教学效果,基于SIMPLE算法并使用MATLAB图形用户界面(graphical user interface,GUI),开发出一款工程流体力学可视化教学软件。该软件包含顶盖驱动流、泊肃叶流、科特流这3种计算案例。学生可自定义物性参数、...为提高工程流体力学课程的教学效果,基于SIMPLE算法并使用MATLAB图形用户界面(graphical user interface,GUI),开发出一款工程流体力学可视化教学软件。该软件包含顶盖驱动流、泊肃叶流、科特流这3种计算案例。学生可自定义物性参数、模型尺寸参数等进行虚拟实验,计算得到不同流动算例在不同工况下的速度分布云图。展开更多
The electrohydrodynamic behaviors and evolution processes of silicone oil droplet in castor oil under uniform direct current(DC)electric field are visually observed based on a high-speed microscopic platform.Subsequen...The electrohydrodynamic behaviors and evolution processes of silicone oil droplet in castor oil under uniform direct current(DC)electric field are visually observed based on a high-speed microscopic platform.Subsequently,the effects of different working conditions,such as electric field strength,droplet size,etc.,on droplet behaviors are roundly discussed.It can be found that there are four droplet behavior modes,including Taylor deformation,typical oblique rotation,periodic oscillation,and fracture,which change with the increase of electric field strength.It is also demonstrated that the degree of flat ellipse deformation gets larger under a stronger electric field.Moreover,both of the stronger electric field and smaller droplet size lead to an increase in the rotation angle of the droplet.展开更多
文摘为提高工程流体力学课程的教学效果,基于SIMPLE算法并使用MATLAB图形用户界面(graphical user interface,GUI),开发出一款工程流体力学可视化教学软件。该软件包含顶盖驱动流、泊肃叶流、科特流这3种计算案例。学生可自定义物性参数、模型尺寸参数等进行虚拟实验,计算得到不同流动算例在不同工况下的速度分布云图。
基金Project supported by the National Natural Science Foundation of China(Grant Nos.51725602 and 51906039)the Natural Science Foundation of Jiangsu Province,China(Grant No.BK20180405)。
文摘The electrohydrodynamic behaviors and evolution processes of silicone oil droplet in castor oil under uniform direct current(DC)electric field are visually observed based on a high-speed microscopic platform.Subsequently,the effects of different working conditions,such as electric field strength,droplet size,etc.,on droplet behaviors are roundly discussed.It can be found that there are four droplet behavior modes,including Taylor deformation,typical oblique rotation,periodic oscillation,and fracture,which change with the increase of electric field strength.It is also demonstrated that the degree of flat ellipse deformation gets larger under a stronger electric field.Moreover,both of the stronger electric field and smaller droplet size lead to an increase in the rotation angle of the droplet.
