Ammonia–Oxygen–Nitrogen System as a Carbon-Free Flammable Mixture

Ammonia–Oxygen–Nitrogen System as a Carbon-Free Flammable Mixture Full article

Journal

Combustion, Explosion and Shock Waves
ISSN: 0010-5082

Output data

Year: 2026, Volume: 62, Number: 3, Pages: 372-385 Pages count : 14 DOI: 10.1134/s0010508226700310

Tags

ammonia, chemical reaction rate, activation energy, ignition delay, detonation cell, critical initiation energy, nitrogen oxide, lean mixture, rich mixture

Authors

Vasil’ev A.A. ^1,2 , Vasil’ev V.A. ²

Affiliations

1	Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia
2	Lavrentyev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, 630090, Novosibirsk, Russia

This paper presents the most important gas-dynamic and kinetic parameters of combustion, explosion, and detonation for ammonia/oxygen combustible systems. Stoichiometric, lean, and rich compositions are considered with the addition of molecular nitrogen, which corresponds to the transition from fuel–oxygen mixtures to fuel–air mixtures. The same parameters are also reported for fuel-air mixtures across a range of concentrations from the lower to the upper flammability limit and as a function of initial pressure. From the perspective of explosion safety, the most critical data concern the critical initiation energy, which enables analysis of the relative hazard of different mixtures. Critical energy E is defined as the minimum initiator energy required to sustain the propagation of combustion and detonation waves in the mixture under study: the lower this energy, the more hazardous the mixture. Additionally, data on the detonation cell size are presented; this length scale is used to determine characteristic parameters of combustion chambers.

Vasil’ev A.A. , Vasil’ev V.A.
Ammonia–Oxygen–Nitrogen System as a Carbon-Free Flammable Mixture
Combustion, Explosion and Shock Waves. 2026. V.62. N3. P.372-385. DOI: 10.1134/s0010508226700310 WOS Scopus OpenAlex

Submitted:	May 5, 2025
Accepted:	Jun 10, 2025
Published print:	Jul 23, 2026

≡ Web of science:	WOS:001830369300009
≡ Scopus:	2-s2.0-105045415351
≡ OpenAlex:	W7170182321