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Effect of charge mobility on dielectric liquid flow driven by EHD conduction phenomenon
Institution:1. United Technologies Research Center, East Hartford, CT 06118, USA;2. Two-Phase Flow and Heat Transfer Enhancement Laboratory, Mechanical, Materials and Aerospace Engineering Department, Illinois Institute of Technology, Chicago, IL 60616, USA;1. Department of Mechanical Engineering, Ferdowsi University of Mashhad, Mashhad 91775-1111, Iran;2. Electrical Engineering Department, Ferdowsi University of Mashhad, Mashhad, Iran;3. School of Design and Engineering, Thomas Jefferson University, 4201 Henry Avenue, Philadelphia, PA 19144, USA;4. Department of Mechanical Engineering, Tennessee Tech University, Cookeville, TN 38505, USA;1. School of Civil Engineering, Guangzhou University, Guangzhou, 510006, China;2. Academy of Building Energy Efficiency of Guangzhou University, Guangzhou, 510006, China;1. Département Fluide-Thermique-Combustion, Institut PPRIME, Université de Poitiers, Boulevard Pierre et Marie Curie, BP 30179, 86962 Futuroscope-Chasseneuil, France;2. Departamento de Electrónica y Electromagnetismo, Universidad de Sevilla, Facultad de Física, Avenida Reina Mercedes s/n, 41012 Sevilla, Spain;3. Departamento de Física Aplicada III, Universidad de Sevilla, ESI, Camino de los Descubrimientos s/n, 41092 Sevilla, Spain;1. Mechanical Engineering Department, University of Balamand, Al-Kurah, Lebanon;2. EHD Team, Pprime Institute, CNRS, University of Poitiers, ISAE-ENSMA, Poitiers, France;3. Department of Applied Physics III, University of Seville, Seville, Spain
Abstract:Electrohydrodynamic (EHD) conduction phenomenon takes advantage of the electrical Coulomb force exerted on a dielectric liquid generated by externally applied electric field and dissociated charges from electrolytes. EHD conduction generated flow relies primarily upon the asymmetry of the electrodes where the flow is always directed toward the broken symmetry regardless of the electrodes polarity. This paper studies the effects of unequal positive and negative charge mobilities on the heterocharge layer structure and generated flow with symmetric and asymmetric electrode designs. The numerical simulations are conducted for a 2-D rectangular channel with the electrodes embedded against the channel wall.
Keywords:Electrohydrodynamic conduction  Mobility  Numerical
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