Ignition and Combustion Enhancement by non-equilibrium plasma in supersonic flow

建立了超音速介质阻挡放电产生非平衡等离子体的方法。通过光谱测量，检测到了适合于点火和增强燃烧的激发态氮分子和氧自由基。阐明了外加电压和放电频率对非平衡等离子体产生的影响，并估算了产生等离子体的电能。此外，还从理论上假设了产生自由基的有效放电条件。

The generation method of non-equilibrium plasma by dielectric barrier discharge(DBD)in a supersonic flow was established. Excited nitrogen molecules and oxygen radicals, which were suitable for ignition and combustion enhancement, were detected by a spectroscopic measurement. The effects of applied voltage and frequency in discharge on the generation of non-equilibrium plasma were clarified and the electric energy for generation of the plasma was estimated. Moreover, efficient discharge conditions for radical generation were theoretically supposed.