scholarly journals Influence of a thin compressible insoluble liquid film on the eddy currents generated by interacting surface waves

2018 ◽  
Vol 3 (6) ◽  
Author(s):  
Vladimir M. Parfenyev ◽  
Sergey S. Vergeles
Keyword(s):  
Liquid Film ◽  
Surface Waves ◽  
Eddy Currents

scholarly journals Formation and decay of eddy currents generated by crossed surface waves

2019 ◽  
Vol 4 (11) ◽  
Author(s):  
V. M. Parfenyev ◽  
S. V. Filatov ◽  
M. Yu. Brazhnikov ◽  
S. S. Vergeles ◽  
A. A. Levchenko
Keyword(s):  
Surface Waves ◽  
Eddy Currents

Surface Wave Propagation of an Ultra Thin Liquid Film on a Rotating Disk

2004 ◽  
Author(s):  
Lin Wu
Keyword(s):  
Wave Propagation ◽  
Surface Wave ◽  
Shock Waves ◽  
Liquid Film ◽  
Surface Waves ◽  
Thin Liquid Film ◽  
Rotating Disk ◽  
Disjoining Pressure ◽  
Shearing Force ◽  
Surface Wave Propagation

We theoretically and numerically study the propagation of axisymmetrical long surface waves of an ultra thin liquid film on a rotating disk. When breaking condition is satisfied, shock waves form and propagate driven by the centrifugal and external shearing forces. The disjoining pressure due to van der Waals force provides diffusion to the system. The surface waves are planarized by the centrifugal force, external shearing force and the disjoining pressure.

Experimental study on the characteristics of capillary surface waves on a liquid film on an ultrasonically vibrated substrate

2018 ◽  
Vol 50 (6) ◽  
pp. 065510 ◽  
Author(s):  
Amin Rahimzadeh ◽  
Mohammad-Reza Ahmadian-Yazdi ◽  
Morteza Eslamian
Keyword(s):  
Experimental Study ◽  
Liquid Film ◽  
Surface Waves ◽  
Capillary Surface

Pulsed discharges produced by surface waves

1998 ◽  
Vol 08 (PR7) ◽  
pp. Pr7-317-Pr7-326 ◽  
Author(s):  
O. A. Ivanov ◽  
A. M. Gorbachev ◽  
V. A. Koldanov ◽  
A. L. Kolisko ◽  
A. L. Vikharev
Keyword(s):  
Surface Waves ◽  
Pulsed Discharges

Determination of eddy current losses and hysteresis losses in magnetic circuits of electrical machines

2020 ◽  
pp. 54-58
Author(s):  
S. M. Plotnikov
Keyword(s):  
Eddy Current ◽  
Magnetization Reversal ◽  
Eddy Currents ◽  
Technical Problem ◽  
Electrical Machines ◽  
Eddy Current Losses ◽  
Hysteresis Losses ◽  
Magnetic Circuits ◽  
Core Losses ◽  
Reversal Frequency

The division of the total core losses in the electrical steel of the magnetic circuit into two components – losses dueto hysteresis and eddy currents – is a serious technical problem, the solution of which will effectively design and construct electrical machines with magnetic circuits having low magnetic losses. In this regard, an important parameter is the exponent α, with which the frequency of magnetization reversal is included in the total losses in steel. Theoretically, this indicator can take values from 1 to 2. Most authors take α equal to 1.3, which corresponds to the special case when the eddy current losses are three times higher than the hysteresis losses. In fact, for modern electrical steels, the opposite is true. To refine the index α, an attempt was made to separate the total core losses on the basis that the hysteresis component is proportional to the first degree of the magnetization reversal frequency, and the eddy current component is proportional to the second degree. In the article, the calculation formulas of these components are obtained, containing the values of the total losses measured in idling experiments at two different frequencies, and the ratio of these frequencies. It is shown that the rational frequency ratio is within 1.2. Presented the graphs and expressions to determine the exponent α depending on the measured no-load losses and the frequency of magnetization reversal.

Magnetoacoustic surface waves in magnetic crystals near spin-reorientation phase transitions

1997 ◽  
Vol 167 (7) ◽  
pp. 735-750 ◽  
Author(s):  
Yurii V. Gulyaev ◽  
Igor E. Dikshtein ◽  
Vladimir G. Shavrov
Keyword(s):  
Phase Transitions ◽  
Surface Waves ◽  
Spin Reorientation
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