Prediction of electrical characteristics of a non-transferred arc-plasma torch using principles of dynamic similarity

Paingankar, A M; Das, Avik; Shirodkar, V. S.; Sreekumar, K.; Venkatramani, N.

doi:10.1088/0963-0252/8/1/013

Cited by 16 publications

(17 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such plasmas are used in large-scale pyrometallurgical processes that can be generated 3 per cent ThO 2 ) or graphite. This has led to the generally accepted categorized of all plasma devices into either transferred arc [26] or non-transferred arc [27] systems. The power generated by a given device is dependent on its operating current and voltage and is required to meet the energy needs of the process.…”

Section: Thermal Plasma Characteristicsmentioning

confidence: 99%

Thermal plasma technology: The prospective future in material processing

Samal

2017

Journal of Cleaner Production

171

View full text Add to dashboard Cite

International audienceAn attempt is made to access the past, present and future research and development in thermal plasma processing of materials. A brief explanation from the basic of thermal plasma understanding towards application of technology in various areas is covered in this article. Such as application of thermal plasma in coating technologies, synthesis of fine powders, waste destruction, spherodization with densification of powders and in slag metallurgy are described from the lab scale basis towards the industrial utilization. Since plasma process is governed by a large number of parameters from input power to furnace configuration. Generation of thermal plasma and various types of plasma reactor is discussed for contribute the significance of output attributes. Finally drawbacks for the growth of thermal plasma technology in commercial aspects are covered up. Keeping in view, the future vision in the area of plasma technology is addressed in this article. Thermal plasma technology and its level of achievements in laboratory and industrial benchmark are covered up in this article. A proposal of future vision in thermal plasma technology draws the attention for commercial benefits and reaches in milestone in industrial area

show abstract

Section: Thermal Plasma Characteristicsmentioning

confidence: 99%

Thermal plasma technology: The prospective future in material processing

Samal

2017

Journal of Cleaner Production

171

View full text Add to dashboard Cite

show abstract

“…the formula in the literature. Among the studies discussing the thermal efficiency, Paingankar studied a plasma generator similar to ours, and obtained [8] 1 − η η = 0.824…”

Section: Evaluation Of Thermal Efficiency Of the Laminar Jet Withmentioning

confidence: 63%

“…5 .1244 × 10 −2 two selecting methods would lead to nearly the same results [8]. Furthermore, calculation at temperatures corresponding to different electron concentrations is made in the next section, and it also shows that the selection of reference values have little effect on the calculated results.…”

Section: Reference Values Physical Variablesmentioning

confidence: 84%

“…Similarity theory was introduced for the characterization of DC plasma generation by Yas'ko [4,5]. By means of this, Brilhac et al [6,7] generalized the relationship of DC vortex plasma torches with well and button type cathodes; Paingankar et al [8] studied the characteristics of a non-transferred arc plasma spray torch; Hur et al [9] reported the characteristics of a plasma torch with hollow electrodes. Until now, all the relevant work has dealt with the generation of turbulent plasma jets, and it appears that laminar plasma generation has never been studied systematically.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Application of similarity theory to the characterization of non-transferred laminar plasma jet generation

Pan

Meng

et al. 2005

Plasma Sources Sci. Technol.

View full text Add to dashboard Cite

Laminar-flow non-transferred DC plasma jets were generated by a torch with an inter-electrode insert by which the arc column was limited to a length of about 20 mm. Current-voltage characteristics, thermal efficiency and jet length, a parameter which changes greatly with the generating parameters in contrast with the almost unchangeable jet length of the turbulent plasma, were investigated systematically, by using similarity theory combined with the corresponding experimental examination. Formulae in non-dimensional forms were derived for predicting the characteristics of the laminar plasma jet generation, within the parameter ranges where no transfer to turbulent flow occurs. The mean arc temperature in the torch channel and mean jet-flow temperature at the torch exit were obtained, and the results indicate that the thermal conductivity feature of the working gas seems to be an important factor affecting thermal efficiency of laminar plasma generation.

show abstract

“…Understanding the roles these parameters play is imperative when developing and producing an optimal (i.e., long, laminar) APPT. A comparison of plasma characteristics may be evaluated using similarity theory, in which one experimental property is used to determine the effect of others without performing additional experimentation [45,46]. Plasma jet velocity measurements have also been taken using particle imaging methods by injecting particles into the plasma to better understand plasma flow conditions [47,48].…”

Section: Background On Plasma Generationmentioning

confidence: 99%

Development of an experiment for investigating the magnetohydrodynamic richtmyer-meshkov instability

Allen¹,

Black²,

Maxon³

et al.

View full text Add to dashboard Cite

Collaboration by some of the world's brightest minds of the 21st Century pinpointed fourteen Grand Engineering Challenges that face humankind today. At the top of this list is "Provide Energy from Fusion"; a requirement deemed crucial for humankind to thrive flourish. Scientists from all over the globe have risen to this challenge in many ways; most recognizably by attempting to succeed at performing inertial confinement fusion (ICF). However, ICF currently remains unsuccessful at providing net-positive energy production, largely due to hydrodynamic instabilities, such as the shock-driven Richtmyer-Meshkov instability (RMI), which occur within the fusion reaction process, creating detrimental mixing. Applying magnetohydrodynamic approaches however, can mitigate these instabilities and reduce fluid mixing. It is precisely this problem that necessitates the research on magnetohydrodynamic instabilities presented in this dissertation to aid in solving the challenge to "Provide Energy from Fusion"; specifically the development of an experiment for investigating the magnetohydrodynamic Richtmyer-Meshkov instability (MHD-RMI). ... By developing and performing the computational and experimental efforts at the Missouri Fluid Mixing and Shock Tube Laboratory (FMSTL), the author has laid the groundwork to observe the suppression of the MHD-RMI in future shock tube experiments.

show abstract

Prediction of electrical characteristics of a non-transferred arc-plasma torch using principles of dynamic similarity

Cited by 16 publications

References 9 publications

Thermal plasma technology: The prospective future in material processing

Thermal plasma technology: The prospective future in material processing

Application of similarity theory to the characterization of non-transferred laminar plasma jet generation

Development of an experiment for investigating the magnetohydrodynamic richtmyer-meshkov instability

Contact Info

Product

Resources

About