Structure of A Heterogeneous Two-Phase Rotating Detonation Wave with Ethanol-Hydrogen-Air Mixture

TL;DR

This paper investigates the structure of a two-phase rotating detonation wave fueled by ethanol-hydrogen-air mixture, revealing a laminated dual-front structure and the effects of hydrogen addition on detonation sustainability.

Contribution

It provides the first detailed analysis of a two-phase RDW fueled by biofuel, highlighting the laminated dual-front structure caused by droplet evaporation.

Findings

Self-sustained RDW achieved with ethanol and hydrogen

Laminated dual-front structure due to droplet evaporation

Hydrogen addition enhances combustion performance

Abstract

In this short Letter, the structure of a rotating detonation wave (RDW) fueled by biofuel is revealed and expounded. The simulation is carried out under an Eulerian-Lagrangian framework in which the main characteristics of the two-phase RDW are analyzed in detail. Results suggest a self-sustained rotating detonation fueled by liquid ethanol and air can be achieved with hydrogen addition for combustion enhancement, and a laminated dual-front structure of the RDW due to the effect of droplet evaporation is captured and clarified.