Numerical Simulation of the Multiphase Flow in Electrospinning Process

• Main Authors: Yin-Zheng Wu, 吳寅正
• Other Authors: Po-Wen Hwang
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/98787886338393140645

碩士 === 逢甲大學 === 航太與系統工程學系 === 102 === This study adopted a numerical simulation approach with the software package, Fluent, to analysis multiphase flows in the electrospinning process. In this simulation, the liquid-gas interface is determined by the volume of fluid method and the applied electrical field is created by the user defined function of Fluent. The parameters, which include applied voltage, charge density, viscosity and injection velocity of fluid, are studied to analyze their effects on the fluid dynamics in the electrospinning process. Under the conditions studied, the following conclusions can be drawn: The growth rate of Taylor cone near the spinneret increases with increasing applied voltage, while decreasing in length. The rate of formation and length of Taylor cone increases with the increasing flow rate of injection. The increase of viscosity retards the formation of Taylor and increases the length of Taylor cone. Whipping motion may occur under some conditions and is simulated successfully in this study.