{"title":"Hydrodynamic forces on a spherical particle in a plane Couette flow","authors":"Tongkuai Wang, Zhaowu Lin, Yu Guo, Zhaosheng Yu","doi":"10.1016/j.ijmultiphaseflow.2025.105341","DOIUrl":null,"url":null,"abstract":"<div><div>The hydrodynamic forces and torque acting on a spherical particle in a plane Couette flow are investigated numerically with the spectral element method. Both non-rotating and rotating particles in a channel with uniform or linear shear flow are considered, to evaluate the effects of rotation and linear shear, respectively. The effects of the far and near side walls on the lift force are investigated by varying the channel half width from 4 to 25 particle diameters and the near-side wall-particle separation distance from 1 to 6 particle diameters. The Reynolds number based on slip velocity and particle diameter ranges from 0.1 to 100. New correlations for drag and lift on a non-rotating particle are established for the wall-bounded Couette flow, based on simulation data. New correlations for the rotation-induced lift and torque are also proposed to account for the wall and finite Reynolds number effects.</div></div>","PeriodicalId":339,"journal":{"name":"International Journal of Multiphase Flow","volume":"192 ","pages":"Article 105341"},"PeriodicalIF":3.8000,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Multiphase Flow","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0301932225002198","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MECHANICS","Score":null,"Total":0}
引用次数: 0
Abstract
The hydrodynamic forces and torque acting on a spherical particle in a plane Couette flow are investigated numerically with the spectral element method. Both non-rotating and rotating particles in a channel with uniform or linear shear flow are considered, to evaluate the effects of rotation and linear shear, respectively. The effects of the far and near side walls on the lift force are investigated by varying the channel half width from 4 to 25 particle diameters and the near-side wall-particle separation distance from 1 to 6 particle diameters. The Reynolds number based on slip velocity and particle diameter ranges from 0.1 to 100. New correlations for drag and lift on a non-rotating particle are established for the wall-bounded Couette flow, based on simulation data. New correlations for the rotation-induced lift and torque are also proposed to account for the wall and finite Reynolds number effects.
期刊介绍:
The International Journal of Multiphase Flow publishes analytical, numerical and experimental articles of lasting interest. The scope of the journal includes all aspects of mass, momentum and energy exchange phenomena among different phases such as occur in disperse flows, gas–liquid and liquid–liquid flows, flows in porous media, boiling, granular flows and others.
The journal publishes full papers, brief communications and conference announcements.