台阶高度对船用低排放塔式分级燃烧性能影响研究  

Investigation on Influence of Step Height on the Combustion Performance in Marine Low Emission Tower-Type Staged Combustion

作　　者：胡金洋 赵铁铮 王俊 陆景贺 刘潇 Hu Jinyang;Zhao Tiezheng;Wang Jun;Lu Jinghe;Liu Xiao(College of Power and Energy Engineering,Harbin Engineering University,Harbin 150001,China;No.703 Research Institute of CSIC,Harbin 150078,China)

机构地区：[1]哈尔滨工程大学动力与能源工程学院,哈尔滨150001 [2]中国船舶集团有限公司第七〇三研究所,哈尔滨150078

出　　处：《燃烧科学与技术》2025年第2期205-211,共7页Journal of Combustion Science and Technology

基　　金：国家科技重大专项资助项目(J2019-Ⅲ-0012-0055).

摘　　要：对塔式分级燃烧室旋流器结构进行优化,研究了旋流器主燃级和值班级之间的台阶高度对燃烧室的流场、燃烧性能及出口温度分布的影响.结果表明:随着台阶高度的增加,台阶回流区尺寸增大并挤压中心回流区头部,燃油分布均匀性降低,高温区面积急剧上升,NO生成量和生成区域均扩大,高温烟气逐渐向出口两侧壁面移动,出口温度分布质量逐渐改善;压力损失系数逐渐降低,当台阶高度由4 mm增加至16 mm时,燃烧室压力损失系数和出口温度分布系数OTDF分别降低了0.2%和5.6%,NO排放量增加了62.1%.The flow field characteristics and combustion performance of low emission tower combustion chamber at different step heights were studied by numerical simulation.The results show that with the increase of step height,the size of the step return area increases and the head of the central return area is squeezed.The uniformity of fuel distribution decreases,the high temperature area increases sharply,and both the amount and the generation area of NO increase.The high temperature flue gas gradually moves to both sides of the exit wall,and the temperature distribution quality of the exit gradually improves.When the step height increases from 4 mm to 16 mm,the combustion chamber pressure loss coefficient and out temperature distribution factor(OTDF)decrease by 0.2%and 5.6%,respectively,while NO emission increases by 62.1%.

关 键 词：台阶高度 船舶燃气轮机 低排放燃烧室 旋流器 

分 类 号：TK11[动力工程及工程热物理—热能工程]