Numerical Investigation of Electrostatic Effect on Indoor Particle Resuspension Due to Human Activity
A numerical study was carried out for indoor particle resuspension due to human walking. The electrostatic effect on particle detachment and resuspension is included in the analysis using a capacitor theory. The shoe-floor system is treated as a plate capacitor. The electrostatic charges and the electric field strength generated by the tribocharging at shoe-floor contact are estimated by the capacitor theory. The Coulomb force, image force, dielectrophoretic force and polarization force are evaluated in the study. The foot stepping down and up processes are treated as the motion of an effective circular disk toward or away from a stationary surface. The surface roughness, the adhesion, lift and drag forces as well as hydrodynamic moment exerted on the particles are also included in the study. The critical radii and particle resuspension rate under various conditions are estimated.
Capacitor Theory Electrostatic Forces Particle Resuspension Human Walking
Xinyu Zhang Goodarz Ahmadi Jing Qian Andrea Ferro Lin Tian
Department of Mechanical and Aeronautical Engineering,Clarkson University,Potsdam,NY,13699,U.S.A. Department of Civil and Environmental Engineering,Clarkson University,13699,Potsdam,NY,13699 U.S.A. Department of Science and Engineering Technology,SUNY Canton,Canton NY 13617 U.S.A.
国际会议
西安
英文
848-853
2011-08-17（万方平台首次上网日期，不代表论文的发表时间）