scholarly journals Electrically induced drop detachment and ejection

2016 ◽  
Vol 28 (2) ◽  
pp. 022101 ◽  
Author(s):  
Andrea Cavalli ◽  
Daniel J. Preston ◽  
Evelyn Tio ◽  
David W. Martin ◽  
Nenad Miljkovic ◽  
...  
Keyword(s):  
Drop Detachment

scholarly journals Dynamical insights into the mechanism of a droplet detachment from a fiber

Soft Matter ◽  
2018 ◽  
Vol 14 (44) ◽  
pp. 8924-8934 ◽  
Author(s):  
Neda Ojaghlou ◽  
Hooman V. Tafreshi ◽  
Dusan Bratko ◽  
Alenka Luzar
Keyword(s):  
Drop Detachment ◽  
Droplet Detachment ◽  
Water Residue

For all drop sizes, water residue on the fiber is maximized by using intermediate rates of forcible drop detachment.

Vapor/Liquid Interaction and Entrainment in Falling Film Evaporators

1980 ◽  
Vol 102 (1) ◽  
pp. 20-25 ◽  
Author(s):  
D. Yung ◽  
J. J. Lorenz ◽  
E. N. Ganic´
Keyword(s):  
Experimental Study ◽  
Horizontal Tube ◽  
Falling Film ◽  
Liquid Entrainment ◽  
Column Formation ◽  
Drop Detachment ◽  
Droplet Sizes ◽  
High Vapor ◽  
Mode A ◽  
Vapor Liquid

The problem of vapor/liquid interaction and entrainment in falling film evaporators is analyzed. Attention is focused primarily on horizontal tube falling film evaporators where liquid falls from one tube to the next in either a droplet or column mode. A criterion is presented for the onset of column formation, and equations are derived for the deflection of droplets and columns due to vapor crossflow. Based on an experimental study of drop detachment and breakup, a correlation is established for the resulting droplet sizes. For high vapor crossflow velocities, a criterion is presented for the inception of liquid entrainment by a process known as stripping. Based on the foregoing models, conditions are defined under which vapor/liquid interaction and entrainment are important for falling film evaporators.

Numerical Analysis of Arc Plasma with Metal Transfer in GMAW

2008 ◽  
Vol 580-582 ◽  
pp. 359-362
Author(s):  
Yoshinori Hirata ◽  
K. Ohnishi
Keyword(s):  
Metal Transfer ◽  
Time Dependent ◽  
Arc Plasma ◽  
Metal Drop ◽  
Spray Transfer ◽  
Drop Detachment ◽  
Globular Transfer ◽  
Arc Shape ◽  
The Moment ◽  
Kinetics Of

A numerical model of time-dependent gas shielded metal arc is described, which was developed in order to make clear the kinetics of arc plasma together with metal transfer. It is possible to calculate and visualize time-dependent temperature and fluid flow field of argon shielded metal arc plasma with the grow-up and the subsequent detachment of the liquid metal drop at the wire tip. Numerical calculation shows that the arc shape in globular transfer abruptly changes at the moment of metal drop detachment. Whereas, the spray transfer arc seems to be stable and almost does not fluctuate with metal transfer.

scholarly journals Drop Detachment and Motion on Fuel Cell Electrode Materials

2012 ◽  
Vol 4 (2) ◽  
pp. 761-771 ◽  
Author(s):  
Eric Gauthier ◽  
Thomas Hellstern ◽  
Ioannis G. Kevrekidis ◽  
Jay Benziger
Keyword(s):  
Fuel Cell ◽  
Electrode Materials ◽  
Drop Detachment ◽  
Fuel Cell Electrode ◽  
Cell Electrode

Definition of Peak Value of Welding Current at Pulsed Arc Welding

2014 ◽  
Vol 682 ◽  
pp. 397-400 ◽  
Author(s):  
N.Yu Krampit ◽  
M.A. Krampit ◽  
L.N. Zubenko
Keyword(s):  
Carbon Dioxide ◽  
Arc Welding ◽  
Welding Current ◽  
Pulsed Arc Welding ◽  
Metal Drop ◽  
Drop Detachment ◽  
Definition Of ◽  
Electrode Metal ◽  
Pulsed Arc ◽  
Peak Value

Pulsed arc welding is one of the ways to control the process of an electrode metal drop transfer actively. Conditions of an electrode metal directional transfer during a pulse-arc welding were investigated, and provided the basis for welding current peak value calculation. Theoretical conditions of an electrode metal drop detachment during a pulse-arc carbon dioxide welding were proved experimentally.

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