# Shock-wave compression and Joule-Thomson expansion.

@article{Hoover2014ShockwaveCA, title={Shock-wave compression and Joule-Thomson expansion.}, author={Wm. G. Hoover and Carol Griswold Hoover and Karl P Travis}, journal={Physical review letters}, year={2014}, volume={112 14}, pages={ 144504 } }

Structurally stable atomistic one-dimensional shock waves have long been simulated by injecting fresh cool particles and extracting old hot particles at opposite ends of a simulation box. The resulting shock profiles demonstrate tensor temperature, Txx≠Tyy and Maxwell's delayed response, with stress lagging strain rate and heat flux lagging temperature gradient. Here this same geometry, supplemented by a short-ranged external "plug" field, is used to simulate steady Joule-Kelvin throttling flow…

## 14 Citations

Transient Heat Flow in a One-component Lennard-Jones/spline Fluid. A Non-equilibrium Molecular Dynamics Study

- Physics
- 2017

A one-component Lennard-Jones/spline fluid at equilibrium was perturbed by a sudden change of the temperature at one of the system’s boundaries. The system’s response was determined by…

Theory and simulation of shock waves: Entropy production and energy conversion.

- PhysicsPhysical review. E
- 2021

The GEM showed that most of the shock's kinetic energy was converted reversibly into enthalpy and entropy, and a small amount was dissipated as produced entropy, while the overpressure determined from NEMD simulations agreed well with the Rankine-Hugoniot conditions for steady-state shocks.

Simulation of Joule-Thomson Throttling of Gases

- Physics
- 2019

A complete general theory for non-equilibrium states is currently lacking. Non-equilibrium states are hard to reproduce experimentally, but creating computer simulations of relatively simple and…

Transition to thermal equilibrium in a deformed crystal

- Physics
- 2019

We study transient thermal process in infinite nonlinear crystal after initial deformation. Initially particles have random displacements and random velocities corresponding to a uniform initial…

Thermal equilibration in infinite harmonic crystals

- PhysicsContinuum Mechanics and Thermodynamics
- 2019

We study transient thermal processes in infinite harmonic crystals having a unit cell with an arbitrary number of particles. Initially, particles have zero displacements and random velocities such…

An analytical description of transient thermal processes in harmonic crystals

- Physics
- 2017

We consider two transient thermal processes in uniformly heated harmonic crystals: (i) equalibration of kinetic and potential energies and (ii) redistribution of the kinetic energy among the spatial…

Equilibration of kinetic temperatures in face-centered cubic lattices.

- PhysicsPhysical review. E
- 2020

It is shown that in the anharmonic case the approach to thermal equilibrium has two time scales, and a universal curve describing equilibration in the Lennard-Jones crystal over a wide range of temperatures is obtained.

Approach to thermal equilibrium in harmonic crystals with polyatomic lattice

- Physics
- 2018

We study transient thermal processes in infinite harmonic crystals with complex (polyatomic) lattice. Initially particles have zero displacements and random velocities such that distribution of…

Asymptotic Description of Fast Thermal Processes in Scalar Harmonic Lattices

- Physics
- 2020

Abstract Thermal vibrations in a d -dimensional ( d = 1, 2) scalar harmonic lattice of a simple structure are under consideration. Redistribution of the averaged kinetic and potential energies of…

Thermal echo in a one-dimensional harmonic crystal

- Physics
- 2018

An instant homogeneous thermal perturbation in the simplest model of the finite harmonic one-dimensional crystal is studied. Previously it was shown that for the same problem in the infinite crystal…

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