Effect of rear blunt body structure and inlet conditions on the flow and combustion characteristics of an advanced vortex combustor for a gas turbine

doi:10.1016/j.applthermaleng.2024.124963

	Effect of rear blunt body structure and inlet conditions on the flow and combustion characteristics of an advanced vortex combustor for a gas turbine
	Wang,Qian 1; Fan,Weijun 1,2; Yi,Jia 1; Xu HQ(徐汉卿)3; Zhang,Rongchun 4
通讯作者	Zhang, Rongchun([email protected])
发表期刊	APPLIED THERMAL ENGINEERING
	2025-01-15
卷号	259 页码:28
ISSN	1359-4311
摘要	The rear blunt body plays a crucial role in the total performance of an advanced vortex combustor. This paper presents a numerical simulation study on the flow and combustion characteristics of an advanced vortex combustor fueled by liquid aviation kerosene under atmospheric pressure conditions, with inlet velocities of 0-100 m/s and inlet temperatures of 300-800 K. Different structural and aerodynamic parameters, including cavity length, rear blunt body height, rear blunt body width and inlet conditions are studied to determine the variation trends of the velocity field, total pressure recovery coefficient, fuel concentration field, combustion efficiency, outlet temperature distribution and pollutant emissions. The results indicate that the presence of the rear blunt body facilitates the formation of a dual vortex structure within the cavity, leading to an increased total pressure recovery coefficient, an improved fuel concentration distribution, an enhanced combustion efficiency, and a more uniform outlet temperature distribution. At an inlet velocity of 100 m/s, the total pressure recovery coefficient increases from 97.01 % to 97.29 %. However, as the cavity length, the rear blunt body height and width increase, the total pressure recovery coefficient and the CO emission increases, and the combustion efficiency, outlet temperature distribution and NO emission decrease to different degrees. In addition, an increase in inlet temperature enhances the fuel concentration distribution, leading to improved combustion efficiency, better outlet temperature distribution, and an increase in NO emission. Additionally, it results in a reduction in CO emission. As the inlet temperature increases from 500 K to 800 K, the combustion efficiency increases from 86.57% to 92.81 %, representing a growth rate of 7.21 %. In summary, when the cavity length is 24 mm, the rear blunt body height is 24 mm, the rear blunt body width is 5 mm, and the inlet temperature is 800 K, the overall combustion performance of the advanced vortex combustor is optimal, which is conducive to providing an important theoretical basis for the design and optimization of advanced vortex combustors.
关键词	Advanced vortex combustor Numerical simulation Cavity length Rear blunt body height Rear blunt body width
DOI	10.1016/j.applthermaleng.2024.124963
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:001362895600001
关键词[WOS]	PERFORMANCE ; FUELS ; MODEL
WOS研究方向	Thermodynamics ; Energy & Fuels ; Engineering ; Mechanics
WOS类目	Thermodynamics ; Energy & Fuels ; Engineering, Mechanical ; Mechanics
论文分区	一类
力学所作者排名	3
RpAuthor	Zhang, Rongchun
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/97551
专题	高温气体动力学国家重点实验室
作者单位	1.Beihang Univ, Sch Energy & Power Engn, Beijing 100191, Peoples R China; 2.Beihang Univ, Sch Energy & Power Engn, Natl Key Lab Sci & Technol Aeroengines Aerothermod, Beijing 100191, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 4.Beihang Univ, Res Inst Aeroengine, Beijing 100191, Peoples R China
推荐引用方式 GB/T 7714	Wang,Qian,Fan,Weijun,Yi,Jia,et al. Effect of rear blunt body structure and inlet conditions on the flow and combustion characteristics of an advanced vortex combustor for a gas turbine[J]. APPLIED THERMAL ENGINEERING,2025,259:28.Rp_Au:Zhang, Rongchun
APA	Wang,Qian,Fan,Weijun,Yi,Jia,徐汉卿,&Zhang,Rongchun.(2025).Effect of rear blunt body structure and inlet conditions on the flow and combustion characteristics of an advanced vortex combustor for a gas turbine.APPLIED THERMAL ENGINEERING,259,28.
MLA	Wang,Qian,et al."Effect of rear blunt body structure and inlet conditions on the flow and combustion characteristics of an advanced vortex combustor for a gas turbine".APPLIED THERMAL ENGINEERING 259(2025):28.