electric field

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electric field

the lines of force exerted on charged ions in the tissues by the electrodes that cause charged particles to move from one pole to another.

electric field

The region in space in which the attractive or repulsive effects of a given electric charge have an effect.
See also: field
References in periodicals archive ?
Under the same electric field intensity, the Mass Reduction Index increases as the air velocity (and correlated Reynolds number) increases.
For every electrode, the electric field intensity is set to the value that maximizes the Mass Reduction Index, the cold surface temperature is varied according to data collected in Table 2 and the remaining parameters are set to the values shown in the same table.
This indicates, on one side, that the increase of frost accumulation due to a greater temperature difference prevails over the field mass reduction effect due to the electric and, on the other, that the electric field intensity that maximizes the Mass Reduction Index varies changing the cold plate temperature.
Under the same electric field intensity and with a variation of the Reynolds number, one effect prevails over the other and this could justify the trend found.
Therefore, in order to compare the results obtained with the different electrodes, and only for this purpose, for every electrode and for every applied voltage used in the experimental campaign both the local and the mean electric field intensity are computed using a finite element software for the frostless surface.
Moreover, a non-uniform electric field is less effective in controlling the frost formation and accumulation, probably because, due to the electric field non-uniformity, part of the cold surface has a local electric field intensity lower than the optimum one.
For every electrode, the electric field intensity is set to the value that maximizes the Mass Reduction Index, the air velocity is varied according to data collected in Table 2 and the remaining parameters are set to the values shown in the same table.
As stated before, to compare the results obtained with different electrodes, the electric field mean intensity is computed using a finite element software for the frostless surface and, therefore, the results are shown as a function of the electric field intensity.
Influence of Electric Field Intensity and Uniformity
Figure 5 shows the dependence of the Mass Reduction Index on the electric field intensity in the case of flat plate electrode (uniform electric field).
Consequently, with the variation of the electric field intensity one effect could prevail over the other and this explains the trend found and the presence of a maximum, before which reduction effect dominates and after which enhancement effect is more important.
The dependence of the Mass Reduction Index on the electric field intensity for all the electrodes is depicted in Figure 6.