Visualization experimental study on NO2 condensation process: Insights into gas-fog-liquid-ice mode evolution

Electrohydrodynamic (EHD) induction pumping is based on charges induced in a dielectric liquid and delayed at a gradient or discontinuity of the electric conductivity. A traveling electric wave (AC) attracts or repels these induced charges, leading to liquid motion. EHD induction pumping of a dielectric micro condensation film, in an external horizontal configuration, is investigated experimentally. The pumping and its effect on heat transfer are explored by varying the voltage and frequency of the electric traveling wave, as well as the condensation heat flux. This study provides a fundamental understanding of induction pumping of micro liquid film and illustrates its potential for managing the flow and enhancing the heat transfer in the presence of phase change.

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Experimental Study of Electrohydrodynamic Induction Pumping of a Dielectric Micro Liquid Film in External Horizontal Condensation Process

Heat Transfer, Volume 2 ◽

10.1115/imece2002-33641 ◽

2002 ◽

Cited By ~ 2

Author(s):

K. Brand ◽

J. Seyed-Yagoobi

Keyword(s):

Heat Transfer ◽

Experimental Study ◽

Heat Flux ◽

Liquid Film ◽

Phase Change ◽

Traveling Wave ◽

Change Process ◽

Change Processes ◽

Condensation Process ◽

Flow Management

Electrohydrodynamic induction pumping of a dielectric micro condensation film is experimentally investigated in an external horizontal configuration. The pumping and its effect on heat transfer are explored by varying the voltage and frequency of the electric traveling wave, as well as the condensation heat flux. The induced pumping impacts the phase change process, but it provides first and foremost a tool for effective flow management. This is of significant importance in phase-change processes.

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Experimental study of metal nanoparticle synthesis by an arc evaporation/condensation process

Journal of Nanoparticle Research ◽

10.1007/s11051-012-0926-1 ◽

2012 ◽

Vol 14 (7) ◽

Cited By ~ 27

Author(s):

Henning Förster ◽

Christian Wolfrum ◽

Wolfgang Peukert

Keyword(s):

Experimental Study ◽

Nanoparticle Synthesis ◽

Metal Nanoparticle ◽

Condensation Process ◽

Arc Evaporation

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Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010013955x ◽

1995 ◽

Vol 53 ◽

pp. 636-637

Author(s):

Norio Baba ◽

Norihiko Ichise ◽

Syunya Watanabe

Keyword(s):

Experimental Study ◽

Spherical Aberration ◽

Incident Beam ◽

Optical Parameters ◽

Beam Tilting ◽

Illumination Method ◽

Restoration Method ◽

Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

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