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气孔大小和压力对爆炸动态特征的影响
Han Sun1, Guogang Yang1, Xiangkun Ma2
1Marine Engineering College, Dalian Maritime University, Dalian 116000, China.
ACS omega
|September 30, 2024
概括
爆炸通风的有效性取决于通风参数. 更高的风口压力和更小的风口尺寸增加了爆炸强度和外部过压,可能导致二次爆炸.
科学领域:
- 燃烧科学是一种科学.
- 流体动力学 流体动力学
- 化学工程是化学工程的组成部分.
背景情况:
- 爆炸通风对于减轻爆炸损害至关重要.
- 了解通风过程中内部和外部空间之间的相互作用对于安全至关重要.
研究的目的:
- 为了研究通风参数对矩形管道中气爆炸的影响.
- 分析火焰,压力和流量场对爆炸通风口的合效应.
主要方法:
- 包括内部和外部空间在内的矩形管道模型的数值模拟.
- 在不同风口压力和尺寸下分析爆炸动态行为.
主要成果:
- 爆炸强度随着风口压力增加和风口尺寸减少而升级.
- 外部过压在风口压力较高或风口尺寸较小时显著上升.
- 火焰和气体混合物形态发生了变化,旋流最初抑制了传播,但更大的压力梯度导致了加速的火焰速度和二次爆炸.
结论:
- 通风参数极大地影响气爆炸动态和通风结果.
- 优化通风口的大小和压力对于有效减少爆炸损害至关重要.
- 对火焰相互作用和二次爆炸风险的进一步研究是有必要的.
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