碳氢燃料空气混合物无约束起爆临界起爆能估算

Prediction of The Critical Initiation Energy for Unconfined Detonation of Hydrocarbon Air Mixtures

本文在矩形激波管内和无约束条件下分别测定了不同当量比的丁烷和空气混合物的临界起爆能，并利用Ｒａｍａｍｕｒｔｈ提出的爆炸长度的概念，推导出可以很方便的由平面起爆估算无约束起爆临界起爆能的公式。根据此式估算的起爆能结果与实验结果吻合较好。

The critical initiation energy for detonation of butane air mixtures was measured in confined (shock tube tests) and unconfined (plastic bag tests) conditions. Based on the concept of explosion length proposed by Ramamurth, a formula for estimating the initiation energy of detonation under unconfined condition was presented. Good agreement was found between the formula and experiments.