等离子体强化燃烧的目前研究进展

Current investigation progress of plasma-assisted ignition and combustion

介绍了等离子体强化燃烧的基本原理,总结了等离子体强化燃烧的3种途径,分别是热强化、动力学强化与输运强化;对国际上,特别是国内在等离子体强化燃烧的应用验证、作用机制和数值仿真研究方面的最新代表性成果进行了综述.提出了等离子体强化燃烧的4个研究方向,分别是等离子体强化燃烧机理、多场耦合建模与仿真、测试诊断研究,以及等离子体强化燃烧在航空发动机中应用的其他科学与技术问题,同时提出了开展这4方面研究工作的一些建议,主要是定量研究等离子体点火与助燃的3种效应,分别建立各效应与点火特性、助燃特性之间的关系;建立等离子体强化燃烧的详细动力学模型;应用先进的测试诊断设备,发展等离子体强化燃烧的新型测试技术;考虑等离子体点火与助燃应用到不同类型发动机燃烧室时的匹配问题,特别是等离子体电源的小型化与轻型化问题等.

The basic principle of plasma-assisted ignition and combustion was introduced, and three pathways of plasma-assisted combustion, i. e... heating enhancement, kinetic en- hancement and transport enhancement, were summarized. The latest research achievements in application verification, action mechanism and numerical simulation of plasma-assisted combustion in the world, especially in domestic fields, were reviewed. Four research directions of plasma-assisted combustion were put forward, including plasma-assisted ignition and combustion mechanism, coupled multi-field simulation, test and diagnosis investigation, and other scientific and technical issues concerning plasma-assisted ignition and combustion application in aviation engine, respectively. In the meantime, some suggestions on these research works were presented below, to quantitatively study the three effects of plasma-assisted ignition and combustion, and established the relationship between each effect and ignition and assisted-combustion characteristics to build detailed kinetic mechanism model of plasma-assisted ignition and combustion; to develop new testing techniques of plasma-assisted ignition and combustion using advanced test and diagnostic facilities; to consider the adaptation issue when plasma-assisted ignition and combustion were applied into various types of problem of light weight and miniaturization of combustion chambers of engines, especially plasma power supply.