Interaction of Plume with Shock Waves in Laser Ablation

Abstract

This study is focused on numerical modeling of evolution of ablated plume in laser furnace. The temperature of catalyst particles embedded in plume is crucial for the formation of carbon nanotubes from gaseous carbon. The proposed model includes compressible Euler equations combined with a multispecies formulation for concentration of chemical components describing the plume expansion into surrounding gas. To obtain the thermal behavior of catalyst particles the Eulerian solver has been combined with Lagrangian tracking of catalyst particles. The chamber pressure, geometry of the carbon target, plume emerging velocity, and the time interval between injections of the plume dramatically affect the thermal behavior of catalyst particles