摘要
等离子体助燃技术是先进高性能航空发动机燃烧技术发展的新方向.为研究等离子体助燃对航空发动机燃烧室内燃料燃烧的强化效果,在燃烧室火焰筒头部设计附加等离子体激励的旋流器,并以航空煤油为燃料,对燃烧室内的速度、温度、压力与紊流动能分布进行数值计算.结果表明,施加等离子体激励后,燃烧室内流场结构会得到较大改善,火焰筒回流区速度降低,主燃区燃气温度升高、压力梯度降低、紊流动能增大,燃烧室出口截面的速度、温度、压力与紊流动能分布更加均匀.
The technology of plasma-assisted combustion is a new development direction of high-tech engine combustion. A swirl vane with plasma actuator was designed in the head of combustor flame tube to study the influence of plasma on fuel combustion in combustion chamber. The fuel was kerosene,and the distributions of velocity,temperature,pressure and turbulent kinetic energy were numerically investigated. Results show that the flow field structure can be greatly improved after plasma excitation is imposed in combustion chamber. The speed in recirculation zone is reduced. Besides,the gas temperature and turbulence kinetic energy increase in primary combustion zone,while pressure gradient decreases. The distributions of velocity,temperature,pressure and turbulent kinetic energy are more even in the outlet of combustor.
出处
《燃烧科学与技术》
EI
CAS
CSCD
北大核心
2015年第2期135-140,共6页
Journal of Combustion Science and Technology
基金
国家自然科学基金资助项目(51436008
50776100
51106179)
关键词
传统燃烧
等离子体助燃
燃烧室
数值模拟
traditional combustion plasma-assisted combustion combustion chamber numerical simulation
