Non-Newtonian effects in simple models of mantle convection

H. B. Mühlhaus*, M. Davies, L. Gross, L. Moresi

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

One of the difficulties with self consistent plate-mantle models capturing multiple physical features, such as elasticity, non-Newtonian flow properties, and temperature dependence, is that the individual behaviours cannot be considered in isolation. For instance, if a viscous mantle convection model is generalized idealistically to include hypo-elasticity, then problems based on Earth-like Rayleigh numbers exhibit almost insurmountable numerical stability issues due to spurious softening associated with the co-rotational stress terms. These difficulties can be avoided if a stress limiter is introduced in the form of a power law rheology or yield criterion. A general Eulerian model is discussed and it is shown that the basic convection modes of a cooling planet are reproduced.

Original languageEnglish
Title of host publication3rd M.I.T. Conference on Computational Fluid and Solid Mechanics
Pages772-774
Number of pages3
Publication statusPublished - 2005
Externally publishedYes
Event3rd M.I.T. Conference on Computational Fluid and Solid Mechanics - Boston, MA, United States
Duration: 14 Jun 200517 Jun 2005

Publication series

Name3rd M.I.T. Conference on Computational Fluid and Solid Mechanics

Conference

Conference3rd M.I.T. Conference on Computational Fluid and Solid Mechanics
Country/TerritoryUnited States
CityBoston, MA
Period14/06/0517/06/05

Fingerprint

Dive into the research topics of 'Non-Newtonian effects in simple models of mantle convection'. Together they form a unique fingerprint.

Cite this