Influences of oscillation on the physical stability and explosion characteristics of solid‒liquid mixed fuel

IF 5 Q1 ENGINEERING, MULTIDISCIPLINARY

Defence Technology(防务技术) Pub Date : 2024-10-01 DOI:10.1016/j.dt.2024.05.014

Chi Zhang , Ge Song , Hui Guo , Jiafan Ren , Chunhua Bai

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引用次数: 0

Abstract

The stratification phenomenon resulting from differences in the physical properties of solid‒liquid components seriously affect the final combustion and explosion characteristics of mixed fuel under the action of oscillation. The effects of oscillation on the physical stability of mixed fuel with two solid‒liquid ratios and three liquid component distribution ratios have been investigated using a self-designed experimental system at oscillation frequencies of 60–300 r/min. The explosion characteristics of mixed fuel before and after oscillation are gained from a 20 L spherical explosion container system. When the mass ratio of liquid components is controlled at 66.9%, 64.7%, 62.6% the final explosion characteristics are stable, with a maximum difference of only 0.71%. The volume of liquid fuel precipitation increases with increasing oscillation frequency when the mass ratio of liquid components reaches 71.7%, 69.6%, 67.7%. The fuel explosion overpressure after oscillation decreases with increasing liquid precipitation volume, and the repeatability is poor, with a maximum standard deviation of 82.736, which is much higher than the ratio without stratification. Properly controlling the mass ratio of liquid components of the mixed fuel can effectively combat the impact of oscillation on the physical state and maintain the stability of the final explosion characteristics.

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振荡对固液混合燃料物理稳定性和爆炸特性的影响

在振荡作用下，固液组分物理性质差异导致的分层现象严重影响了混合燃料的最终燃烧和爆炸特性。利用自行设计的实验系统，在振荡频率为 60-300 r/min 的条件下，研究了振荡对两种固液比和三种液体组分分布比的混合燃料的物理稳定性的影响。从一个 20 L 的球形爆炸容器系统中获得了混合燃料在振荡前后的爆炸特性。当液体成分的质量比控制在 66.9%、64.7% 和 62.6% 时，最终爆炸特性稳定，最大差异仅为 0.71%。当液体组分质量比达到 71.7%、69.6%、67.7% 时，液体燃料析出量随振荡频率的增加而增加。振荡后的燃料爆炸超压随液体析出量的增加而减小，重复性较差，最大标准偏差为 82.736，远高于不分层的比例。适当控制混合燃料液体组分的质量比，可有效对抗振荡对物理状态的影响，保持最终爆炸特性的稳定性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Defence Technology(防务技术) Mechanical Engineering, Control and Systems Engineering, Industrial and Manufacturing Engineering

CiteScore

8.70

自引率

0.00%

发文量

728

审稿时长

25 days

期刊介绍： Defence Technology, a peer reviewed journal, is published monthly and aims to become the best international academic exchange platform for the research related to defence technology. It publishes original research papers having direct bearing on defence, with a balanced coverage on analytical, experimental, numerical simulation and applied investigations. It covers various disciplines of science, technology and engineering.