Effect of the Structure Parameters of a Low Swirler on Premixed Characteristics
Effect of the Structure Parameters of a Low Swirler on Premixed Characteristics作者机构：School of Mechanical EngineeringTongji UniversityShanghai 201804China
出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)
年 卷 期：2022年第31卷第1期
页 面：207-213页
核心收录：
学科分类：080704[工学-流体机械及工程] 08[工学] 0807[工学-动力工程及工程热物理]
基 金：This study is supported by Shanghai Committee of Science and Technology(Grant No.18DZ1202003)
主 题：micro gas turbine low swirler premixed characteristics numerical simulation
摘 要：Combustion with lean premixed and low swirl is an effective way of flame *** can improve the flame stability and reduce NOX *** this kind of combustion,one of the most important issues is fuel/air premixed *** the structure parameters influence that issue is figured out through numerical *** structure parameters concerned in the study are as *** are shape of blades,number of blades,location and shape of gas *** influences of them are analysed with comprehensive consideration of many *** the same light shading rate and stagger angle,the axial swirler with curved blades has worse premixed uniformity and lower pressure loss than the one with straight *** the same structure of each blade,the decrease of the quantity of blades does influence the pressure loss,while the quantity of gas jets changes *** it has little effect on premixed uniformity in a certain ***,more blades make contribution to better premixed *** the total flow area is the same,the axial and circumferential positions of the fuel jets also greatly influence the premixing *** the fuel jets are upstream the blades and locate at middle of the vanes,the premixing performance is the ***,the jet direction of the fuel jets is a very important influencing factor of the premixing *** the fuel jet direction is oblique downward at an angle of 30°to the horizontal,the premixing effect is better than the horizontal outflow,which is better than the oblique upward structure.
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