الفهرس 
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Abstract
This work presents the experimental results of breakdown voltage measu¬direct voltage for nonuniform field configuration
t-plane). The effect of forced circulation of the test liquid in the for different gap settings varying from 100 to 700 mic¬’. Fresh, treated liquid sample and new electrode were used in every exp¬nt. A total of one hundred and forty eight experiments were carried out.
The breakdown voltage-gap length characteristics, for different rates liquid flow, obtained for both polarities of the point, were similar to for insulating liquids, using stationary samples, showing the of a critical crossover gap length.
The present results showed that for gap lengths smaller than the criti¬the breakdown voltage for the positive point is higher than that the negative point; whereas for gaps larger than the critical length , point gives a higher breakdown voltage. At the critical gap polarities of the needle have the same breakdown voltage. The the breakdown voltage-gap length characteristics depends on the
of the plane electrode and is similar to that previously reported r aluminum electrodes. Variation of the flow rate of the injected test
quid has no effect on the shape of the breakdown voltage-gap length charac¬the zero gap intercept. Increasing the flow rate causes a
in the crossover point (from 320 to 430 microns) •
Changing the needle length changes the rate of flow at which the break¬wn voltage becomes constant (saturation) in the breakdown voltage-gap ngth characteristics. It is noticed that the needle length has no effect
On the breakdown voltage very high rates ( more than 11 cm3/sec ) as well
ry samples.
The technique developed and the results obtained in the present work investigation which will contribute to a better space charge formation in the breakdown mechani-
of the results is based on the effect of the flow of the the formation of the space charges and consequently on the
a streamer discharge between the electrodes •