The research activities in the project Assessing the Influence of Real Releases on Explosions (AIRRE) included a unique series of large-scale explosion experiments with high-momentum jet releases directed into congested geometries with subsequent ignition. The primary objective for the AIRRE project was to gain improved understanding of the effect that realistic releases and turbulent flow conditions have on the consequences of accidental gas explosions in the petroleum industry. A secondary objective was to develop a methodology that can facilitate safe and optimal design of process facilities. This paper presents selected results from experiments involving ignition of a highly turbulent gas cloud, generated by a large-scale, pressurised release of natural gas. The paper gives an overview of the effect on maximum explosion overpressures of varying the ignition position relative to the release point of the jet and a congested region placed inside the flammable cloud, with either a high or a medium level of congestion. For two of the tests, involving a jet release and the medium congestion rig, the maximum overpressures significantly exceeded those obtained in a quiescent reference test. The paper presents detailed results for selected tests and discusses the effect of the initial flow field generated by realistic releases – including turbulence, net flow and concentration gradients – on relevant explosion phenomena.

评估实际排放对爆炸的影响项目中的研究活动(AIRRE) 包括一系列独特的大规模爆炸实验，其中高动量射流释放直接进入拥挤的几何形状，随后点火。AIRRE 项目的主要目标是更好地了解实际排放和湍流条件对石油工业中意外气体爆炸后果的影响。第二个目标是开发一种方法，可以促进过程设施的安全和优化设计。本文介绍了从涉及点燃高湍流气体云的实验中选择的结果，该气体云由天然气的大规模加压释放产生。该论文概述了相对于射流的释放点和位于可燃云内部的拥塞区域（具有高度或中等拥塞程度）改变点火位置对最大爆炸超压的影响。对于涉及喷射释放和中等拥塞钻机的两项测试，最大超压显着超过了静态参考测试中获得的超压。该论文提供了选定测试的详细结果，并讨论了实际释放产生的初始流场（包括湍流、净流和浓度梯度）对相关爆炸现象的影响。最大超压显着超过了在静态参考测试中获得的超压。该论文提供了选定测试的详细结果，并讨论了实际释放产生的初始流场（包括湍流、净流和浓度梯度）对相关爆炸现象的影响。最大超压显着超过了在静态参考测试中获得的超压。该论文提供了选定测试的详细结果，并讨论了实际释放产生的初始流场（包括湍流、净流和浓度梯度）对相关爆炸现象的影响。