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为研究宽广温度范围内镁基水金属燃料/水反应特性,在总结国内外研究成果的基础上,建立了包含镁/水和碳/水两个主要反应的镁基水反应金属燃料/水反应模型,其中镁/水反应在不同温度段分别采用动力学和扩散分段控制,镁/水扩散燃烧模型考虑部分氧化镁在镁液滴表面凝聚;碳/水反应为反应动力学控制,反应动力学模型依据阿仑尼乌斯公式。采用数值分析方法,研究了水燃比和镁含量对燃料/水和镁/水反应特性的影响规律。研究结果表明:燃料/水反应特性的计算结果与实验值相符;在保证一定燃料自持燃烧温度的基础上,提高镁含量,选择合适的水燃比,有利于提高燃料/水的反应特性,促进燃料/水反应快速、充分的进行。
In order to study the reaction characteristics of magnesium-based water-metal fuel / water over a wide temperature range, based on the research results at home and abroad, magnesium-based water-reactive metal fuel / water reaction Model, in which magnesium / water reactions are controlled by kinetic and diffusion stages at different temperatures respectively. Part of magnesium oxide is condensed on the surface of magnesium droplets by the diffusion model of magnesium / water. Carbon / water reaction is controlled by reaction kinetics and reaction kinetics The learning model is based on the Arrhenius formula. The influence of water-fuel ratio and magnesium content on the reaction characteristics of fuel / water and magnesium / water was studied by numerical analysis method. The results show that the calculated results of the fuel / water reaction are in good agreement with the experimental ones. Increasing the magnesium content and selecting the appropriate water / fuel ratio can improve the fuel / water reaction characteristics and promote the combustion of fuel / Water reaction fast, fully carried out.