NESSi: The Non-Equilibrium Systems Simulation package

A non-equilibrium multiscale simulation paradigm

A con-current multiscale non-equilibrium molecular dynamics is proposed. The notion of multiscale canonical element ensemble is put forth, which enables us to employ the coarse grain field as a heat bath, and it is accomplished by using a distributed Nośe–Hoover thermostat network. In doing so, it guarantees that the non-equilibrium molecular dynamics returns to a canonical equilibrium state wh...

Transitions in non equilibrium systems

We study numerically the transition between organized and disorganized states of three non equilibrium systems in their respective scaling regimes. The first system is the Poisson/coalesce random walk (PCRW) where the particles describe independent random walks and when two particles meet they could coalesce with probability k, otherwise, they interchange their positions. The second system is a...

Splitting Schemes for the Simulation of Non Equilibrium Radiative Flows

This paper is devoted to the numerical investigation of radiative hydrodynamics equations. We focus on non–equilibrium regimes and we design asymptotic preserving schemes which can handle the corresponding stiff equations. Our study includes relativistic effects and Doppler corrections.

Boundary-Induced Phase Transitions in Equilibrium and Non-Equilibrium Systems

Boundary conditions may change the phase diagram of non-equilibrium statistical systems like the one-dimensional asymmetric simple exclusion process with and without particle number conservation. Using the quantum Hamiltonian approach, the model is mapped onto an XXZ quantum chain and solved using the Bethe ansatz. This system is related to a two-dimensional vertex model in thermal equilibrium....

NESSI OSS Workshop