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	Effect of Gas Flow on Plasma Jet Generated by Hybrid H2O-Ar Torch Kavka, Tetyana ; Kopecký, Vladimír ; Hrabovský, Milan ; Sember, Viktor ; Konrád, Miloš This paper present results of experimental investigation of effect of argon plasma gas flow rate on characteristics of plasma jet in a H2O-Ar DC arc plasma torch.Two different diagnostics technics optical spectroscopy and enthalpy probe have been applied to study plasma jet under atmospheric pressure.Changes inplasma temperature, velocity and composition for different flow rates of argo. Detailed record
	Spectroscopic and Enthalpy probe Diagnostics of Fluctuating H2O-Ar Thermal Plasma Jet Sember, Viktor ; Kavka, Tetyana ; Kopecký, Vladimír ; Hrabovský, Milan Time averaged OES and EP measurements of the temperature and mole fraction of entrained air in the H2O-Ar dc arc thermal plasma jet are compared.It is shown that choosing an appropriate method of evaluation of spectroscopic data may reduce the effects of fluctuations and departures from equilibrium and lead to more realistic results.The differences between OES and EP measurements. Detailed record
	Instability in thermal plasma jet generated by water plasma torch Hrabovský, Milan ; Konrád, Miloš ; Kopecký, Vladimír ; Macura, Pavel Fluctuations and flow instabilities in thermal plasma jet generated in dc arc plasma torch were investigated by optical system with fast response photodiodes. The coherent oscillations were revealed that are produced due to hydrodynamic instability of plasma flow close to the exit nozzle of the torch.Properties of the these oscillations are investigated. Detailed record
	Desing and modification of water-stabilized plasma generator and multiphase modelling of flow in the arc chamber Hrabovský, Milan ; Matas, R. ; Moravec, J. Two-phase water-air flow in arc chamber of water stabilized plasma generator is modeled using computer code FLUENT. Effect of arc chamber geometry on properties and stability of water vortex is investigated on the basis of the computations. Detailed record
	Thermal plasma jets generated in liquid-stabilized and hybrid dc arc torches Hrabovský, Milan This paper presents survey of plasma jet parameters of liquid and hybrid arc torches and discusses physical mechanism that control plasma properties. Special attention is devoted to properties of jets that are important for performance characteristics in plasma spraying. Detailed record

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