Open AccessSimulation of lava flows with power-law rheology
Author(s) -
Marilena Filippucci,
Andrea Tallarico,
Michele Dragoni
Publication year - 2012
Publication title -
discrete and continuous dynamical systems. series s
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.481
H-Index - 34
eISSN - 1937-1632
pISSN - 1937-1179
DOI - 10.3934/dcdss.2013.6.677
Subject(s) - rheology , lava , mechanics , power law , power law fluid , work (physics) , constant (computer programming) , flow (mathematics) , newtonian fluid , volume (thermodynamics) , non newtonian fluid , bingham plastic , geology , thermodynamics , physics , mathematics , computer science , statistics , volcano , seismology , programming language
In this work we studied the effect of a power-law rheology on a gravity driven lava flow. Assuming a viscous fluid with constant temperature and constant density and assuming a steady flow in an inclined rectangular channel, the equation of the motion is solved by the finite volume method and a classical iterative solutor. Comparisons with observed channeled lava flows indicate that the assumption of the power-law rheology causes relevant differences in average velocity and volume flow rate with respect to the Newtonian rheology