# Thermal gas rectification using a sawtooth channel

## TL;DR

This study investigates how asymmetric dissipative channels influence thermal gas flow, revealing complex behaviors and regimes through simulations and theoretical analysis, advancing understanding of thermal rectification mechanisms.

## Contribution

The paper introduces a detailed numerical and theoretical analysis of thermal gas rectification in asymmetric channels, highlighting non-monotonic flux behaviors and distinct regimes.

## Key findings

- Flux depends non-monotonically on temperature, asymmetry, and density.
- Identifies three distinct flow regimes.
- Provides theoretical insights into parameter dependence.

## Abstract

We study the rectification of a two-dimensional thermal gas in a channel of asymmetric dissipative walls. For an ensemble of smooth Lennard-Jones particles, our numerical simulations reveal a non-monotonic dependence of the flux on the thermostat temperature, channel asymmetry, and particle density, with three distinct regimes. Theoretical arguments are developed to shed light on the functional dependence of the flux on the model parameters.