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首页> 外文会议>International conference on mechanical and electronics engineering >Cellular Pattern Evolution of Deflagration-to-detonation Transition in Square Detonation Tube
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Cellular Pattern Evolution of Deflagration-to-detonation Transition in Square Detonation Tube

机译：方形爆震管内爆燃-爆轰过渡的蜂窝模式演变

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This paper presents recent results of an experimental investigation on Deflagration to Detonation Transition(DDT) with HVair and C2H2/air mixtures in 60mmx60mm square detonation tube. The entire process of DDT is demonstrated by cellular patterns and the analysis is mainly based on their evolution. The pressure transducers and ion-probes were utilized to get the pressure and flame history in the tube respectively, and the corresponding cellular patterns are recorded on soot foils along cover board with 60mmxl380nnn.Results show that overdriven detonation appears only once and several blast appear in DDT.Cellular patterns show that several twistable lines appear at the obstacle exit neighborhood area，while regular cell takes place after the final twistable line.Details of the cellular pattern indicate that from the early stage to the end of regular cell, the detonation wave sequentially experiences impactive area, abundant secondary cells, secondary cells expanding, local explosive, fine secondary cells, regular cell.
机译：本文介绍了在60mmx60mm方形爆震管中使用HVair和C2H2 /空气混合物进行爆燃至爆轰过渡（DDT）的实验研究的最新结果。滴滴涕的整个过程通过细胞模式来证明，分析主要基于它们的发展。利用压力传感器和离子探针分别获得管内的压力和火焰历史，并在盖板上的烟灰箔上记录60mmxl380nnn的相应蜂窝状图形。结果表明，过度驱动的爆炸只发生一次，爆炸发生几次。 DDT。蜂窝模式显示在障碍物出口附近区域出现了几条可扭曲线，而规则单元则出现在最后一条可扭曲线之后。单元模式的详细信息表明，从规则单元的早期到结束，爆炸波依次经历撞击区域，充沛的二次细胞，二次细胞膨胀，局部爆炸，细小的二次细胞，规则细胞。

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