English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We discuss three related subjects well suited to graduate research. Thefirst, Nonequilibrium molecular dynamics or "NEMD", makes possible thesimulation of atomistic systems driven by external fields, subject to dynamicconstraints, and thermostated so as to yield stationary nonequilibrium states.The second subject, Smooth Particle Applied Mechanics or "SPAM", provides aparticle method, resembling molecular dynamics, but designed to solve continuumproblems. The numerical work is simplified because the SPAM particles obeyordinary, rather than partial, differential equations. The interpolation methodused with SPAM is a powerful interpretive tool converting point particlevariables to twice-differentiable field variables. This interpolation method isvital to the study and understanding of the third research topic we discuss,strong shockwaves in dense fluids. Such shockwaves exhibit stationaryfar-from-equilibrium states obtained with purely reversible Hamiltonianmechanics. The SPAM interpolation method, applied to this molecular dynamicsproblem, clearly demonstrates both the tensor character of kinetic temperatureand the time-delayed response of stress and heat flux to the strain rate andtemperature gradients. The dynamic Lyapunov instability of the shockwaveproblem can be analyzed in a variety of ways, both with and without symmetry intime. These three subjects suggest many topics suitable for graduate researchin nonlinear nonequilibrium problems.

Three Lectures: Nemd, Spam, and Shockwaves