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2篇 您的检索式：作者名="R. Kozakov"

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		题名	作者	年代	出处	被引量
	1	Investigation of a CO2 Switching Arc Using Spectroscopic Diagnostics and Computational Fluid Dynamics Simulations显示文摘A deep understanding of the physical processes coming along with the current interruption in high voltage circuit breakers is essential for the optimization of today’s switching technologies.Therefore a switching arc in a model circuit breaker is studied by means of computational fluid dynamics(CFD)simulations and optical emission spectroscopy(OES)in this contribution.Experimental investigations are performed in carbon dioxide(CO2)at absolute filling pressures of 0.1 and 0.5 MPa.CFD simulations are carried out based on a model of the arcing zone including a consistent treatment of the radiation transport and the wall ablation.Carbon ion line radiation is analysed in the experiment using an optical path in the heating channel between the electrodes inside the nozzle system.The pressure value in the arc is estimated based on the line width-intensity dependence.Obtained values correspond to the measured pressure outside the arc.For the temperature profiles,a good agreement within the accuracy of the approaches is observed between the CFD simulations and the results of OES.	D. Eichhoff P. G. Nikolic R. Kozakov G. Gott D. Uhrlandt A. Schnettler	2013	高电压技术2013，39，9：	1
	2	Non-equiliburum Modelling of the Electrical Characteristics of a Free-burning Arc显示文摘An arc model considering deviations from thermodynamic and chemical equilibrium has been developed in order to achieve a better understanding of the arc plasma close to material surfaces.The model is based on unified consideration of the thermionic tungsten cathode,the arc region and the flat anode made of copper.The heat transfer within the electrodes is coupled with the plasma through the energy fluxes onto the electrode boundaries.Electrical characteristics of an 8 mm long free-burning arc are presented along with findings from spectroscopic measurements of the plasma emission in atmospheric pressure argon.The arc current varied from 60 A up to 200 A,and the gas flow rate was set at 12 L/min(at atmospheric pressure,room temperature).	M. Baeva S. Gorchakov R. Kozakov D. Uhrlandt T. Schoenemann	2013	高电压技术2013，39，9：	1

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