hal-01342271
https://hal-ensta-paris.archives-ouvertes.fr//hal-01342271
doi:10.1137/050635018
[ENSTA] ENSTA Paris
[TDS-MACS] Réseau de recherche en Théorie des Systèmes Distribués, Modélisation, Analyse et Contrôle des Systèmes
High-Resolution Finite Volume Methods for Dusty Gas Jets and Plumes
Pelanti, Marica
LeVeque , Randall,
[INFO.INFO-MO] Computer Science [cs]/Modeling and Simulation
ART
finite volume methods
high-resolution methods
volcanic flows
dusty gas
plumes
jets
We consider a model for dusty gas flow that consists of the compressible Eulerequations for the gas coupled to a similar (but pressureless) system of equations for the mass,momentum, and energy of the dust. These sets of equations are coupled via drag terms and heattransfer. A high-resolution wave-propagation algorithm is used to solve the equations numerically.The one-dimensional algorithm is shown to give agreement with a shock tube test problem in theliterature. The two-dimensional algorithm has been applied to model explosive volcanic eruptions inwhich an axisymmetric jet of hot dusty gas is injected into the atmosphere and the expected behavioris observed at two different vent velocities. The methodology described here, with extensions tothree dimensions and adaptive mesh refinement, is being used for more detailed studies of volcanicjet processes.
2006
en
SIAM Journal on Scientific Computing
Society for Industrial and Applied Mathematics