Combustion of micro aluminum–water mixtures

Ki, Wando; Шмелев, В. М.; Finiakov, Sergey; Cho, Yongho; Yoon, Woong

doi:10.1016/j.combustflame.2013.06.026

Cited by 21 publications

(2 citation statements)

References 11 publications

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“…Water ramjet engines as a new type of underwater power system have attracted much attention. They are a new type of underwater propulsion device that uses water in the working environment as the oxidizer and only carries high-energy metal fuels. − Currently, the propellants used in water jet propulsion engines mainly adopt solid propellants containing metal particles such as magnesium (Mg) or aluminum (Al), which still have the characteristics of low energy density and low calorific value. − …”

Section: Introductionmentioning

confidence: 99%

Kinetic Analysis of the Reaction of Micrometer-Sized Al–Mg Alloy Particles in a Water Vapor Atmosphere

Wei,

Han,

Lei

et al. 2024

Langmuir

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This study investigated the reaction mechanism of aluminum−magnesium (Al−Mg) alloy particles with water (Al− Mg/H 2 O) through thermogravimetric analysis-differential scanning calorimetry experiments and kinetic analysis using isoconversional methods and the master plot technique to determine the reaction mechanism function, with the aim of providing insights to support metal powder/water ramjet engine design and combustion characteristics. The results showed that the Al−Mg/H 2 O reaction occurred in two distinct stages, with stage 1 primarily involving the reaction of Mg elements in the L(Al−Mg) alloy with water while Al played a leading role in stage 2. Notably, the reaction temperatures of Al−Mg particles were significantly lower than those for either Al or Mg particles alone in a water vapor environment. Additionally, the activation energy of stage 1 was lower than that for the individual Al and Mg particles and decreased with increasing Mg content in stage 2. Furthermore, the concentration of Mg in the alloy was found to have a major influence on the reaction mechanism, which followed a random nucleation and growth model. Overall, this work elucidated an alternating endothermic and exothermic staged reaction process for Al−Mg/H 2 O dominated first by Mg and then Al with kinetic insights providing theoretical support for optimizing Al−Mg alloy compositions for improved ignition and combustion performance in metal powder/water ramjet engines.

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Section: Introductionmentioning

confidence: 99%

Kinetic Analysis of the Reaction of Micrometer-Sized Al–Mg Alloy Particles in a Water Vapor Atmosphere

Wei,

Han,

Lei

et al. 2024

Langmuir

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“…17,18 However, most of studies had focused on the investigation of the reaction of aluminum and water at low temperature, [19][20][21] and the combustion behaviors of aluminum/ice solid propellant. [22][23][24] Only a few experimental studies were carried out on the combustion characteristics of aluminum in heated steam atmosphere. 25,26 Based on thermogravimetric analysis, Schoenitz et al 27 found that the oxidation process of aluminum powder in steam atmosphere was similar to that in oxygen atmosphere.…”

Section: Introductionmentioning

confidence: 99%