脉动燃烧器的设计与研究

介绍了北京航空航天大学近年来在脉动燃烧研究中所获得的结果,从满足脉动燃烧的最主要法则--瑞利准则出发,探讨了燃烧器主要部件,包括燃烧室、尾管、喷注器及输送系统的主要参数的影响因素,提出了以速度相似的原则建立工程设计方法的途径.

Design and Investigation of Pulse Combustors

It presents results obtained in an ongoing project at BUAA,stemming from the need to develop more ratinoal design methods.It discusses the effect of parameters of main elements of pulse combustors,including combustor chamber,tail pipe,injector and reactant supply system upon its performance,in the aspect of satisfying Rayleigh's criterion,the basical law of pulsating combustion.It was found that,a limit of minimum length of the tail pipe exists for a certain pulse combustor to keep an indispensable acoustic impedance.The characteristic and geometry of the reactant supply system and injector are very critical.It is proposed that an engineering design approach could be developed based on a velocity similarity concept.A series of pulse heaters rating 10 kW~300 kW were developed successfully using this concept.