Compression Waves and Phase Plots: Simulations

TL;DR

This paper presents a new analysis method for compression waves that distinguishes between simple, steady, and transitional waves, aiding in the interpretation of high-pressure experiments.

Contribution

It introduces a simple analysis tool to identify the nature of compression waves, including non-isentropic characteristics, improving experimental analysis accuracy.

Findings

Effective identification of wave types in simulations

Enhanced understanding of wave transition states

Improved analysis of high-pressure equation of state

Abstract

Compression wave analysis started nearly 50 years ago with Fowles.[1] Coperthwaite and Williams [2] gave a method that helps identify simple and steady waves. We have been developing a method that gives describes the non-isentropic character of compression waves, in general.[3] One result of that work is a simple analysis tool. Our method helps clearly identify when a compression wave is a simple wave, a steady wave (shock), and when the compression wave is in transition. This affects the analysis of compression wave experiments and the resulting extraction of the high-pressure equation of state.