Articles | Volume 9, issue 2
Model description paper
18 Feb 2016
Model description paper |  | 18 Feb 2016

ASHEE-1.0: a compressible, equilibrium–Eulerian model for volcanic ash plumes

M. Cerminara, T. Esposti Ongaro, and L. C. Berselli

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Cited articles

Bagheri, G., Bonadonna, C., Manzella, I., Pontelandolfo, P., and Haas, P.: Dedicated vertical wind tunnel for the study of sedimentation of non-spherical particles., Rev. Sci. Instrum., 84, 054501,, 2013.
Balachandar, S.: A scaling analysis for point-particle approaches to turbulent multiphase flows, Int. J. Multiph. Flow, 35, 801–810,, 2009.
Balachandar, S. and Eaton, J. K.: Turbulent dispersed multiphase flow, Ann. Rev. Fluid Mech., 42, 111–133,, 2010.
Bardina, J., Ferziger, J. H., and Reynolds, W. C.: Improved Subgrid Scale Models for Large Eddy Simulation, 1980, American Institute of Aeronautics and Astronautics, 13th Fluid and Plasma Dynamics Conference, Snowmass, Pap. No. 80, Colo., 14–16 July, 1980.
Bernardini, M. and Pirozzoli, S.: A general strategy for the optimization of Runge–Kutta schemes for wave propagation phenomena, J. Comput. Phys., 228, 4182–4199, 2009.
Short summary
A new model for gas–particles compressible turbulent dynamics is developed. It is implemented in a fluid dynamic code based on the OpenFOAM libraries. The solver is tested against well known benchmarks, in particular: single and multiphase isotropic turbulence, plume turbulent dynamics and shock tube experiments. These comparisons validate the capability of the solver to capture the desired physics. A volcanic plume is analyzed, focusing on non-equilibrium ash dynamics and mean plume properties.