Analysis by modeling of plasma flow interactions with liquid injection

被引：13

作者：

Meillot, E. ^{[1
]}

Damiani, D. ^{[1
]}

Vincent, S. ^{[2
]}

Caruyer, C. ^{[1
]}

Caltagirone, J. P. ^{[2
]}

机构：

[1] CEA DAM, F-37260 Le Ripault, Monts, France

[2] Univ Bordeaux 1, TREFLE Lab, F-33600 Pessac, France

来源：

SURFACE & COATINGS TECHNOLOGY | 2013年 / 220卷

关键词：

Suspension plasma spraying; Liquid jet; Fragmentation; Compressible model; Droplet breakup; SUSPENSION; JET; COATINGS; INSTANT;

D O I：

10.1016/j.surfcoat.2012.11.025

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This paper deals with the modeling of different plasma flows interacting with a liquid jet of pure water. Using only fluid mechanic equations, the goal was to simulate and to understand the first moments of these interactions during suspension plasma spraying of nanomaterials. The obtained simulations were then validated by comparing the results with breakup mechanisms described for the same Weber number in a plasma cross-flow with constant temperature. The global model was applied to various suspension plasma spraying conditions: two plasma gas mixtures (Ar/H-2 and Ar/He) and two types of liquid injections (train of droplets or continuous jet). These simulations demonstrated different trajectories of the liquid and, consequently, different modes of breakup. Droplet size distributions were also calculated in the global modeling field. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：149 / 156

页数：8

共 28 条

[11] VELOCITY-MEASUREMENT OF DC PLASMA JETS BASED ON ARC ROOT FLUCTUATIONS [J].