Physics – Condensed Matter – Materials Science
Scientific paper
2009-11-30
International Review of Chemical Engineering 2 (2010) 86-97
Physics
Condensed Matter
Materials Science
Scientific paper
. Plasma jets are a high temperature flows, then all physical parameters are temperature dependent. This work aims to address the issue of simulating plasma-jet from the point of view of extending the applications to simulating flows with temperature-dependent diffusion parameters (viscosity and diffusivity), focusing on the phenomena occurring in plasma-jet flow for a mixture of plasma gases, N2-Ar62.5% vol. Argon and Nitrogen are two gases of the most ones used in plasma spraying. The mixture is used when looking for some jet properties. We limit our effort to take out the dynamic and thermal characteristics of this complex flow using the lattice Boltzmann equation. An important section focuses mainly on the validation of our results with compute jet dynamics software such as GENMIX and Jets & Poudres developed in laboratory SPCTS in several updated edition. These codes established for many turbulence models (k-epsilon, k-omega, Prandtl's models...) are helpful numerical keys for understanding the physics of plasma jets and plasma spraying.
Djebeli Rhida
Elganaoui Mohamed
Pateyron Bernard
Sammouda Habib
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