基于多种控制机理的湍流爆炸燃烧模型研究

TURBULENCE EXPLOSION COMBUSTION MODEL STUDY BASED MULTICONTROL MECHANISMS

本文针对狭长受限空间油气爆炸燃烧发生、发展过程特点,建立不同控制机理制约不同反应步的分步反应湍流燃烧模型。该燃烧模型的基本思想在于将化学反应分为两步进行,各步的控制机理不同,各步释放的能量也不同．采用分解、混合、反应的分步方式来模拟油气爆炸燃烧过程,通过实验和数值计算结果表明,该模型能较好解决湍流爆炸燃烧过程的数值模拟问题,其结果与实验吻合很好。

In this paper, the turbulence explosion combustion model based multi control mechanisms for the fuel-air mixture explosion in the narrow-long confined spaces is established. The chemical reaction of explosion combustion process is divided into two steps, the first is the activation reaction with the characteristic of the gestation; the second is the reaction of turning active intermediate product into the final product. They are controlled respectively by the different mechanisms. The model is efficient for the fuel-air mixture explosion in the narrow-long confined spaces, which is demonstrated by the numerical simulation and experiment data.