Local and Non-local Thermal Transport Simulation

TL;DR

This paper investigates thermal transport in laser-produced plasmas, emphasizing the limitations of classical theories in non-local regimes and demonstrating the use of Fokker-Planck simulations for accurate modeling.

Contribution

It introduces a comparative analysis of local and non-local thermal transport using Fokker-Planck simulations and Epperlein scheme, highlighting the inadequacy of classical models in deep temperature gradients.

Findings

Classical Spitzer-Harm theory is insufficient for deep temperature gradients.

Fokker-Planck simulation provides more accurate thermal transport modeling.

Numerical results demonstrate differences between local and non-local regimes.

Abstract

In laser produced plasmas, when temperature gradient is deep, local thermal transport is not dominant. Classical theory of Spitzer-Harm should not be used in this case. Instead, Fokker-Planck simulation method should be utilized. In this paper, research on thermal transport in both local and non-local cases are discussed. Numerical results by using Epperlein scheme are provided and compared.