Viscosity models for silicate melts

TL;DR

This paper introduces unified empirical models for the shear and extensional viscosity of silicate melts, using only the zero shear viscosity parameter, applicable across diverse compositions, to enhance understanding of geological rheology.

Contribution

It proposes novel, simplified viscosity models for silicate melts that depend solely on the zero shear viscosity, unifying shear and extensional rheology descriptions.

Findings

Models accurately fit experimental data across compositions

Simplifies rheological modeling of silicate melts

Enhances predictive capabilities for geological processes

Abstract

Rheology of silicates (melts or super cooled as glasses) is one of the most important fields to mankind, as geological activity largely influences life. In this paper, unifying empirical models for the Non-Newtonian shear viscosity and the extensional viscosity are proposed. The models have only one parameter, the zero shear viscosity (the Newtonian plateau), and are valid for a vide range of chemical compositions