Simulation and Investigation of Influence of Inlet Gas Velocity on Plasma Structure Formed in Plasma Torch

Document Type : Research Paper

Authors

1 Associate Professor, Plasma Physics Research Center, Science and Research Branch, Islamic Azad University

2 PhD in Physics, Plasma Physics Research Center, Science and Research Branch, Islamic Azad University

3 Assistant Professor, Plasma Physics Research Center, Science and Research Branch, Islamic Azad University

Abstract

plasma Torch is widely used in industry and it is very important for determination of the properties of plasma formed in it. Accurate determination of the plasma properties, such as its velocity and temperature profiles, can greatly help to improve plasma torch structure for use for future purposes. Since, experimental testing of plasma properties is very costly and time consuming, simulation of the plasma is utilized. In this paper, the three-dimensional, time-dependent, and non- equilibrium model of plasma torch is simulated and properties of the plasma are investigated. Comparison with the results of similar works shows that the model works well. The effect of change in inlet gas velocity on plasma has also been studied. The results show that with increasing gas velocity at the inlet, the plasma velocity increases, while its temperature decreases. Changing the velocity of the inlet gas also causes the deviation from the thermodynamic equilibrium near the walls.

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References

[1]       Chau S. W., Hsu K. L., Lin D. L., Chen J. S., and Tzeng C. C., Modeling and experimental validation of a 1.2 MW DC transferred well-type plasma torch, Comput. Phys. Commun., 177, 114-117, 2007.
[2]       Liang P., and Groll R., Numerical Study of Plasma-Electrode Interaction during Arc Discharge in a DC Plasma Torch, IEEE Trans. Plasma Sci., 46, 363-372, 2018.
[3]       Guo Z., Yin S., Liao H., and Gu S., Three-dimensional simulation of an argon–hydrogen DC non-transferred arc plasma torch, Int. J. Heat Mass Transf., 80, 644-652, 2015.
[4]       Chazelas C., Trelles J. P., Choquet I., and Vardelle A., Main Issues for a Fully Predictive Plasma Spray Torch Model and Numerical Considerations, Plasma Chem. Plasma Process., 37, 627-651, 2017.
[5]       Baeva M., Kozakov R., Gorchakov S., and Uhrlandt D., Two-temperature chemically non-equilibrium modelling of transferred arcs, Plasma Sources Sci. Technol., 21, 1-13, 2012.
[6]       CFD-ACE+ v2014.0: Modules. Manual Part I., https://www.esi-group.com, Available in 14 Mar 2017.
 [7]      Gharaeinia M., Saviz S., and Sari A. H., Influence of the inlet gas velocity components on the survival of the vertex of gas in the plasma torch, J. Theor. Appl. Phys., 14, 1-10, 2020.
[8]       Bird R. B., Stewart W.E., and Lightfoot E.N., Transport phenomena, Wiley, New York, 2, 27-40, 2006.
[9]       Chyou Y. P., and Pfender E., Modeling of plasma jets with superimposed vortex flow, Plasma Chem. Plasma Process., 9, 291-328, 1989.
[10]    Trelles J. P., Chazelas C., Vardelle A., and Heberlein J. V. R., Arc plasma torch modeling, J. Therm. Spray Technol., 18, 728-752, 2009.
[11]    Versteeg H. K., and Malaskekera W., An Introduction to Computational Fluid Dynamics: The Finite Volume Method, Pearson, London, 1, 100-150, 1995.
[12]    Chigier N. A, and Chervinsky A., Experimental investigation of swirling vortex motion in jets, J. Appl. Mech. Trans. ASME, 34, 443-451, 1964.
[13]    Baeva M., and Uhrlandt D., Non-equilibrium simulation of the spatial and temporal behavior of a magnetically rotating arc in argon, Plasma Sources Sci. Technol., 20, 1-10, 2011.
[14]    Felipini C. L, and Pimenta M. M., Some numerical simulation results of swirling flow in d.c. plasma torch, J. Phys. Conf. Ser., 591, 1-13, 2015.
[15]    Guo Z., Yin S., Qian Z., Liao H., and Gu S., Effect of the deviation of the current density profile center on the three-dimensional non-transferred arc plasma torch, Comput. Fluids, 114, 163–171, 2015.
[16]    Baeva M., Uhrlandt D., Benilov M. S., and Cunha M. D., Comparing two non-equilibrium approaches to modelling of a free-burning arc, Plasma Sources Sci. Technol., 22, 1-9, 2013.
[17]    ModirKhazeni S. M., and Trelles J. P., Towards a comprehensive modelling and simulation approach for turbulent non-equilibrium plasma flows, Proceedings of 22th international symposium on plasma chemistry, Belgium, 5-10 July, 2015.

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History

  • Receive Date: 24 February 2020
  • Revise Date: 20 June 2020
  • Accept Date: 27 June 2020

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