Liquid Precursor Plasma Spraying: Modeling the Interactions between the Transient Plasma Jet and the Droplets

Abstract : Plasma spraying using liquid feedstock makes it possible to produce thin coatings (< 100 μm) with more refined microstructures than in conventional plasma spraying. However, the low density of the feedstock droplets makes them very sensitive to the instantaneous characteristics of the fluctuating plasma jet at the location where they are injected. In this study the interactions between the fluctuating plasma jet and droplets are explored by using numerical simulations. The computations are based on a three-dimensional and timedependent model of the plasma jet that couples the dynamic behavior of the arc inside the torch and the plasma jet issuing from the plasma torch. The turbulence that develops in the jet flow issuing in air is modeled by a Large Eddy Simulation model that computes the largest structures of the flow which carry most of the energy and momentum.
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Conference papers
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https://hal.archives-ouvertes.fr/hal-00282847
Contributor : Martine Segear <>
Submitted on : Wednesday, May 28, 2008 - 3:33:10 PM
Last modification on : Wednesday, February 14, 2018 - 4:29:42 PM

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  • HAL Id : hal-00282847, version 1

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C. Marchand, Christophe Chazelas, Gilles Mariaux, Armelle Vardelle. Liquid Precursor Plasma Spraying: Modeling the Interactions between the Transient Plasma Jet and the Droplets. International Thermal Spray Conference & Exposition, May 2007, Beijing, China. pp.196-201. ⟨hal-00282847⟩

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