This PhD thesis focuses on numerical and analytical methods for simulating the dynamics of
volcanic ash plumes. The study starts from the fundamental balance laws for a multiphase …

Turbulent round buoyant jets and fountains issuing vertically into a linearly density-stratified
calm ambient have been investigated in a series of laboratory experiments. The terminal …

Using a one-dimensional code, we computed the power (enthalpy discharge rate) of a
twelve-cell mechanical draft cooling tower (MDCT) using over two hundred visible …

Volume estimations for discrete plumes accompanying short-lived eruptions are potentially
possible using infrasound signals. Plumes emitted during short-lived (discrete) eruptions …

A natural draft chimney is defined by the existence of buoyancy and a solid wall barrier
between two regions of fluids that differ in density. This familiar concept is approximately true …

Starting from the balance equations of mass, momentum and energy we formulate an
integral 1D model for a poly-disperse mixture injected in the atmosphere. We write all the …

Volcanic ashfall can cause considerable social impacts to a wide geographical area. Given
the challenge to predict volcanic eruptions, it is essential to simulate the dispersion of ash as …

Plume chimney is a plume that has chimney characteristics due to stack effects of plumes. In
this study, Computational Fluid Dynamic (CFD) simulation was carried out for three different …

A new methodology is proposed to study turbulent axisymmetric plume behaviour based on
the analysis of dye forced plume images. The methodology is based on the plume …

Ce manuscrit résume les travaux de recherche que j'ai réalisés depuis mon recrutement
comme Maître de conférences à l'Université de Lorraine. J'ai intégré l'équipe" feux" du …