Analytical study on accelerating falling of non-spherical particle in viscous fluid

作     者：Amir MALVANDI Davood Domairry GANJI Ali MALVANDI 

作者机构：Karaj BranchIslamic Azad University Mechanical Engineering DepartmentBabol Noshirvani University of Technology Department of ElectricalBiomedical and Mechatronic EngineeringQazvin BranchIslamic Azad University 

出 版 物：《International Journal of Sediment Research》 (国际泥沙研究(英文版))

年 卷 期：2014年第29卷第3期

页      面：423-430页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0708[理学-地球物理学] 0818[工学-地质资源与地质工程] 0807[工学-动力工程及工程热物理] 0903[农学-农业资源与环境] 0816[工学-测绘科学与技术] 0801[工学-力学（可授工学、理学学位）] 

主　　题：Non-spherical particle Unsteady motion Sedimentation Analytical solution Homotopy analysis method 

摘      要：Unsteady motion of a vertically falling non-spherical particle has attracted considerable attention due to its frequent applications in nature and industry.A series of semi-analytical methods have been used to raise the results’ accuracy as well as widening the region of *** current study pursued a new analytical solution for the unsteady motion of a rigid non-spherical particle in a quiescent Newtonian fluid,based on the Optimal Homotopy Analysis *** a view towards obtaining the highest level of accuracy and ensuring the convergence of the analytical results,the averaged residual errors were obtained and *** addition to flexibility,it was also proven that the proposed method can lead to completely reliable and precisely accurate *** on the series solution,the effects of physical parameters on the terminal settling velocity(*** greatest velocity that a falling body may reach)and the acceleration time(*** time that a particle reaches the settling velocity) are investigated.