TITLE:
Modeling the Interaction between a Thermal Flow and a Liquid: Review and Future Eulerian-Lagrangian Approaches
AUTHORS:
Stéphane Vincent, Erick Meillot, Céline Caruyer, Jean-Paul Caltagirone
KEYWORDS:
Modeling, Liquid/Plasma Interaction, Fragmentation, Thermal Spraying Simulation
JOURNAL NAME:
Open Journal of Fluid Dynamics,
Vol.8 No.3,
July
19,
2018
ABSTRACT: Suspension Plasma Spraying is a complex process in which several physical
mechanisms play a part. So the modeling and understanding of the interaction
between a high-velocity and thermal flow and a liquid precursor phase is
of major importance concerning the control and characterization of the
process. The liquid droplet size distribution has a high influence on the kinetic
properties of the as-sprayed nanometer particles before impacting on a target
substrate. An overview of existing models is provided dealing with the penetration
of the liquid phase into the thermal flame and the resulting fragmentation
and vaporization of this phase before impact. The physical characteristics
of the flow as well as existing Lagrangian and Eulerian modeling
strategies are briefly discussed while paying attention to the physical parameters
characterized and measured by numerical simulation. The potential of the
various models and also their limits are intended to be highlighted. Future
coupled Eulerian-Lagrangian modeling strategies are also proposed for a
global and more exhaustive representation of the injection, fragmentation and
dispersion part of the two-phase gas-liquid flow before particle impact on the
substrate.