침심 노즐전극의 전기 유체역학적 액적 형성과정

Electrohydrodynamic Drop Formation Processes of a Needle-Centered Nozzle Electrode

  • 문재덕 (경북대 전자전기컴퓨터학부)
  • 발행 : 2008.10.01

초록

In this paper, the meniscus formation/deformation processes and conduction characteristics of the needle-centered ceramic nozzle electrode as an effective electrohydrodynamic (EHD) flow driving mechanisms for de-ionized water and silicone oil have been investigated. Results showed that the applied high voltage affected significantly on the processes, such as the drop formation mode, the deformation mode, the dripping mode, the jet mode, and the atomization mode. There was the EHD atomization mode for the de-ionized water while it was not occurred for the silicone oil, which, however, might be due to the lower electric conductivity and dielectric property of the oil than that of the water.

키워드

참고문헌

  1. F. Pollak, "New Micro-architecture Challenges in the Coming Generation of CMOS Process Technologies," Micro 32, 1999
  2. PC Power and Cooling, Inc., "Rotary fan efficiency for Intel processor fan," January. 2002
  3. F. Yang, N.E. Jewell-Larsen, D.L. Brown, K. Pendergrass, D.A. Parker, I.A. Krichtafovitch, A.V. Mamishev, Corona driven air propulsion for cooling of electronics, XIIIth International Symposium on High Voltage Engineering, pp. 1-4, 2003
  4. R. Mestiri, R. Hadaji, S.B. Nasrallah, The electrical discharge as a source of a mechanical energy, Desalination, Vol. 220, pp. 468-475, 2008 https://doi.org/10.1016/j.desal.2007.01.048
  5. M. Rickard, D. Dunn-Rankin, F. Weinberg, F. Carleton, Maximizing ion-driven gas flows, Journal of Electrostatics, Vol. 64, pp. 368-376, 2006 https://doi.org/10.1016/j.elstat.2005.09.005
  6. E. Moreau, G. Touchard, Enhancing the mechanical efficiency of electric wind in corona discharge, Journal of Electrostatics, Vol. 66, pp. 39-44, 2008 https://doi.org/10.1016/j.elstat.2007.08.006
  7. H. Tsubone, B. Komeili, S.Minami, G.D. Harvel, K. Urashima, C.Y. Ching, J.S. Chang, Flow characteristics of dc wire-non -parallel plate electrohydrodynamic gas pump, Journal of Electrostatics, Vol. 66, pp. 115-121, 2008 https://doi.org/10.1016/j.elstat.2007.09.002
  8. B. Komeili, J.S. Chang, G.D. Harvel, C.Y. Ching, Electrohydrodynamically Enhanced Capillary Evaporator, International Symposium on New Plasma and Electrical Discharge Applications and on Dielectric Materials, pp. 111-116, August 2007
  9. J. D. Moon, D.-H. Lee, T.-G. Kang, K.-S. Yon, A Capacitive type of electrostatics spraying nozzle, Journal of Electrostatics, Vol. 57, pp. 363-379, 2003 https://doi.org/10.1016/S0304-3886(02)00173-0
  10. J. L. Li, EHD spraying induced by the pulsed voltage superimposed to a bias voltage Journal of Electrostatics, Vol. 65, pp. 750-757, 2007 https://doi.org/10.1016/j.elstat.2007.06.005
  11. J.-P. Borra, P. Ehouarn, D. Boulaud, Electrohydrodynamic atomization of water stabilized by glow discharge operating range and droplet properties, Journal of Aerosol Science, Vol. 35, pp. 1313-1332, 2004 https://doi.org/10.1016/j.jaerosci.2004.05.011
  12. A. Castellanos, (ed), Electrohydrodynamics, CISM Cources and Lectures No 380, Springer, 1998
  13. J. K. Walsh, A.W. Weimer, C.M. Hrenya, Thermophoretic deposition of aerosol particles in laminar tube flow with mixed convection, Journal of Aerosol Science, Vol. 37, pp. 715-734, 2007 https://doi.org/10.1016/j.jaerosci.2005.05.017
  14. A. Jaworek, A. Krupa, Studies of the corona discharge in ehd spraying, Journal of Electrostatics, Vol. 40 & 41, pp. 173-178, 1997 https://doi.org/10.1016/S0304-3886(97)00033-8
  15. P. Atten, J. Seyed-Yagoobi, Electrohydrodynamically Induced Dielectric Liquid Flow Through Pure Conduction in Point/Plane Geometry, IEEE, IA, 10, 1(2003) 27-36
  16. J. S. Eow, M. Ghadiri, Mortion, deformation and break-up of aqueous drops in oil under high electric field strengths, Chemical Engineering and Processing, Vol. 42, pp. 259-272, 2003 https://doi.org/10.1016/S0255-2701(02)00036-3
  17. L. E. Lundgaard, G. Berg, A. Pederson, P.J. Nilson, Eletrocoalescence of water drop pairs in oil, Procedings of 14thInternational Conference on Dielectric Liquids, pp. 215-219, July 2002
  18. F. Yan, B. Farouk, F. Ko, Numerical modeling of an electrostatically driven liquid meniscus in the cone-jet mode, Journal of Aerosol Science, Vol. 34, pp. 99-116, 2003 https://doi.org/10.1016/S0021-8502(02)00146-5