CAJ | 학술논문

为研究低旋流燃烧(LSC)技术背离传统旋流燃烧机理的燃烧方式,以及其所具有的燃烧效率高、稳定性强、火焰区域温度低和NOx排放量极低等特点,采用数值模拟方法,对LSC燃烧和流动特性以及受喷射器多孔板阻塞比的影响进行初步研究.结果表明:LSC喷射器能够形成典型扩散湍流流动和"扫帚形"低温火焰结构;多孔板阻塞比对LSC喷射器扩散湍流流动分布、中心线上轴向气流速度和湍流强度有很大影响.
위연구저선류연소(LSC)기술배리전통선류연소궤리적연소방식,이급기소구유적연소효솔고、은정성강、화염구역온도저화NOx배방량겁저등특점,채용수치모의방법,대LSC연소화류동특성이급수분사기다공판조새비적영향진행초보연구.결과표명:LSC분사기능구형성전형확산단류류동화"소추형"저온화염결구;다공판조새비대LSC분사기확산단류류동분포、중심선상축향기류속도화단류강도유흔대영향.
Low-swirl combustion(LSC) which deviates from traditional swirl combustion, has characteristics of higher combustion efficiency, low temperature flame region, good combustion stability and emissions of ultra-low NOx. Numerical simulations were carried out to study the flow field, combustion characteristics and the influences of screen blockage of LSC. Result shows that LSC injector generates divergent turbulent flow and broom flame brushes. The screen blockage has great influence on divergent flow field, centerline velocity profiles and centerline turbulent intensity of LSC.