离心力场下扩散射流火焰的特性

以直段空腔和弯曲空腔为研究对象,在相同的初始条件下试验了两者之间火焰传播的特性,研究了强离心力条件下的扩散射流火焰特性.通过比较分析,在弯曲空腔中离心力场的影响下,扩散射流火焰受到浮升力的作用,以"焰泡迁移"的方式在主流中传播,加快了火焰传播速度,削弱了横向气流的干扰作用,使扩散射流火焰顺利地与空气掺混反应,增加了其在横向气流中的穿透深度.

Study of diffusion jet flame characteristic under centrifugal force

The paper adopted the straight and curving passages to investigate the flame characteristic under the same test conditions.The diffusion jet flame characteristic was studied under high centrifugal force.Through comparison and analysis of the test results,it was obviously observed that the flame speed was faster in the curving passages under buoyant force action resulting from a high centrifugal force.The high centrifugal force made the diffusion flame speed faster and weakened the interference of crossflow.The diffusion flame could mix and react with the mainstream much more easily.The penetration depth of jet flame in the crossflow was increased.