Abstract
When materials processing using laminar argon plasma jets is performed in ambient air, the entrainment of air into the jets will lead to the oxidation of processed metallic materials. Employing a co-axial shrouding gas is a feasible approach to reduce the undesirable material oxidation. This paper studies numerically the effects of the shrouding gas on the characteristics of the laminar argon plasma jet impinging normally upon a flat substrate located in air surroundings. The effects on the jet flow and heat/mass transfer characteristics are investigated of many related parameters, especially of the shroud gas velocity.
| Original language | English |
|---|---|
| Pages (from-to) | 1019-1021 |
| Number of pages | 3 |
| Journal | Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics |
| Volume | 26 |
| Issue number | 6 |
| State | Published - Nov 2005 |
| Externally published | Yes |
Keywords
- Argon plasma
- Impinging jet
- Jet entrainment
- Shrouding gas
- Species diffusion
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