Modeling of HMX monopropellant combustion with detailed condensed-phase kinetics

Lalit Patidar, Mayank Khichar, Stefan T. Thynell

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


HMX is an important energetic ingredient in solid propellants and explosives. For safe and effective use of HMX in various applications, it is essential that the burning characteristics are properly understood. In this study, the self-deflagration of HMX monopropellant is investigated using a one-dimensional steady-state multiphase combustion model. Decomposition in liquid phase is modeled using a detailed reaction mechanism, consisting of elementary reactions investigated using quantum mechanics calculations, as opposed to a global three-step mechanism used till date in previous combustion models. Phase transformation in the solid region from β-HMX to δ-HMX is also modeled and the thickness of the δ-HMX region is calculated in addition to the thickness of the melt layer. Model inputs in the liquid phase are rigorously calculated using quantum mechanics calculations and molecular dynamics simulations. The simple model, with homogeneous liquid phase and dissolved gases in the melt layer, is able to predict the burn-rate and its temperature sensitivity as well as the melt-layer thickness. Predicted temperature and species profiles are also in reasonable agreement with the experimental measurements. Various combustion wave characteristics investigated at 1 atm in the present study are also being investigated over a wide range of pressures.

Original languageEnglish (US)
Title of host publicationAIAA Propulsion and Energy Forum and Exposition, 2019
PublisherAmerican Institute of Aeronautics and Astronautics Inc, AIAA
ISBN (Print)9781624105906
StatePublished - 2019
EventAIAA Propulsion and Energy Forum and Exposition, 2019 - Indianapolis, United States
Duration: Aug 19 2019Aug 22 2019

Publication series

NameAIAA Propulsion and Energy Forum and Exposition, 2019


ConferenceAIAA Propulsion and Energy Forum and Exposition, 2019
Country/TerritoryUnited States

All Science Journal Classification (ASJC) codes

  • Energy(all)
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Control and Systems Engineering
  • Mechanical Engineering


Dive into the research topics of 'Modeling of HMX monopropellant combustion with detailed condensed-phase kinetics'. Together they form a unique fingerprint.

Cite this