Non-intrusive two-phase fluid pumping based on an electrohydrodynamically (EHD) induced flow phenomenon with free liquid surface exposed to gas-phase corona discharges is experimentally investigated. Dielectric liquid flow generated near a corona discharge electrode progresses toward an inclined plate electrode, and then climbs up the surface against the gravitational force for an air-wave (AW) type EHD pump. The AW type EHD pump is operated on ionic wind field along the inclined plate electrode. The pumping performance of time-averaged liquid flow rate and the liquid-phase flow motion are characterized. The liquid flow characteristics related to a dimensionless parameter of corona discharge fields are presented.
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Ryu-ichiro Ohyama: He received his M.Sc. (Eng) in Electrical Engineering in 1988 from Tokai University. He also received his Ph.D. (Eng.) in Electrical Engineering in 1991 from Tokai University. He worked in Department of Engineering Physics, McMaster University as a visiting associate professor in 1999. He works in Electrical Engineering, Tokai University as an associate professor since 1996. His research interests are Quantitative Visualization in Electrohydrodynamically Induced Fluid Flow Field.
Masaki Kumeta: He received his B.Sc. (Eng.) in Electrical Engineering in 2001 from Tokai University. He also received his M.Sc. (Eng.) in Electrical Engineering in 2003. He works in Department of Electrical Engineering, Tokai University as a part-time researcher since 2004. His research interests are Quantitative Visualization in Electrohydrodynamically Induced Fluid Flow Field.
Akihiro Ueda: He received his B.Sc. (Eng.) in Electrical Engineering in 1999 from Tokai University. He also received his M.Sc. (Eng.) in Electrical Engineering in 2001. He works in Fujitsu Co. His research interests are Quantitative Visualization in Electrohydrodynamically Induced Fluid Flow Field.
Alan Watson: He received his B.Sc. (Physics) from Manchester University in 1954, the Diploma in Electronics from Southampton University in 1956, and the M.Sc. Tech degree in Electrical Engineering from Manchester University in 1963. After working with Metropolitan Vickers Electrical Corp on vacuum arcs and magnetohydrodynamics from 1958 to 1963 he then joined Curtis-Wright Corp in the U.S.A. briefly and then Ion Physics Corp in Massachusetts. He was awarded the Dr.rer.nat. degree in Physics from the Gesamthochschule, Kassel, Germany for his work on high voltage breakdown in vacuum. From 1970 to 1997 Dr. Watson occupied faculty positions at the University of Western Ontario and the University of Windsor, Canada retiring as professor in 1997.
Jen-Shih Chang: He received his M.Sc. (Eng.) in Electrical Engineering from Musashi Institute of Technology. He also received his Ph.D (Eng.) from the Center for Research in Experimental Space Science (CRESS), York University, Canada. During 1973–74 he was a Researcher at the Centre de Recherchers en Physique de l′Environment, CNRS, France. From 1975 to 1977 he was a Project Scientist/Assistant Professor at Department of Physics and CRESS, York University. He works in Department of Engineering Physics, McMaster University as a professor since 1979. His main research areas are applied electrostatics, electrohydrodynamics, pollution control and waste treatments.
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Ohyama, R., Kumeta, M., Ueda, A. et al. A fundamental characteristic and image analysis of liquid flow in an AW type EHD pump. J Vis 8, 339–346 (2005). https://doi.org/10.1007/BF03181553
- EHD pump
- Image analysis
- Liquid flow
- Corona discharge field