逆向射流火焰稳定特性的实验研究

本文初步揭示了逆向射流的火焰稳定机理及火焰稳定准则。

An Experimental Study of Opposed Jet Flame Stabilization

This paper reports a preliminary study in criterion and mechanism of flame stability using opposed jet. The experimental investigation was made for cold flow field and blowoff of a stabilized flame by means of premixed lean liquefied petrolium gas. The criterion of flame stabilization has been obtained. It can be presented as: which correlated with main stream velocity, opposed jet velocity and inner diameter of jet tube. The range of critical zone is determined preliminarily by blowoff phenomenon using nitrogen as a blowing medium. A mechanism of flame stabilization proposed roughly in this paper. In the mechanism, critical zone is considerd as a well-stirred reactor and it acts as a strong ignition source to keep the flame stabilization.