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Effect of pulsed electromagnetic field on crude oil rheology
被引:0
|作者:
Sokolovié, Radmila Šećerov
[1
]
Sokolovic, Slobodan
[1
]
Mihajlović, Borde
[3
]
Gelei, Tanja
[1
]
Pekarić, Neda
[2
]
Ševic, Snezana
[3
]
机构:
[1] Department of Food and Chemical Engineering, Faculty of Technology, University of Novi Sad, Novi Sad, Yugoslavia
[2] Department of Food and Chemical Engineering, Faculty of Technical Sciences, University of Novi Sad, Novi Sad, Yugoslavia
[3] Serbia Oil Company, Novi Sad, Yugoslavia
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关键词:
Electromagnetic field effects - Rheology - Shear stress;
D O I:
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摘要:
The effect of low-frequency pulsed electromagnetic field (PEMF) on crude oil rheology was studied on 11 samples of domestic crude oil with a high pour point. Experiments were carried out by using homogeneous single unipolar 70 μs-wide quasi-square pulses with peak intensities of 1 mT and 5 mT and frequency varying from 8 to 60 Hz. The rheotests were performed at 20, 25, 30, and 35 °C, using shear rates in the interval from 16.2 to 438 s-1. PEMF influenced the rheological behavior of samples by increasing/decreasing the shear stress, but not changing the shape of the flow curves. The PEMF frequency exhibited crucial effects on shear stress, and a certain periodicity in the relation between these two quantities, similar for both PEMF intensities, was observed for all the samples.
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页码:4828 / 4834
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