等离子体助燃及其对燃烧室出口紊流度影响的数值分析

Numerical Analysis of the Effect of Plasma Assisted Combustion on Turbulence at the Exit of Combustor

为了研究等离子体的助燃效果,以CH4与空气的混合气为对象,对燃烧产物和燃烧室出口流场的紊流度进行了数值模拟分析。结果表明等离子体可以提供燃烧开始的自由基,加快连锁反应的进行,从而提高燃烧温度;还表明与传统燃烧技术相比,等离子体助燃技术可以改善燃烧室出口流场(包括温度场和速度场)的分布。

In order to study the effect of plasma assisted combustion, the combustion products of methane-air mixture and trend of turbulence at exit of combustor were investigated by numerical simulation and analyses. The results prove that plasma assisted combustion can provide active particle and increase concatenate chemical reaction speed to promote burning temperature. Besides. compared with that supported by traditional combustion, the distribution of velocity and temperature are improved by plasma assisted combustion.