Qualitative analysis of inclusion turbulent deposition at liquid metal/slag interface

Abstract

A turbulent deposition model initially developed for aerosols is adapted to the specific case of inclusion deposition at liquid metal/slag interface. In this model, the eddies near the interface, responsible for inclusion deposition, are modeled analytically by a sequence of stagnation point flows. The equation governing inclusion motion includes the steady drag force, the buoyancy force and the pressure gradient force. Lubrication effects are taken into account close to the interface. Lagrangian tracking is performed in order to identify the particle limiting trajectory and calculate the particle deposition velocity. The numerical simulations show that the lubrication effects are negligible in the case of aerosols but are significant in the case of hydrosols (like inclusions in liquid metal). Indeed, lubrication effects reduce the deposition velocity by one order of magnitude.