Experimental and Numerical Simulation Study of Compressors with Non-Axisymmetric Layouts

doi:10.16183/j.cnki.jsjtu.2024.056

Abstract

Abstract:

The non-axisymmetric deviation of blade stagger angle and tip clearance has significant impact on aerodynamic performance and stability in actual compressors. In this paper, three sets of compressor test, including the prototype with a uniform layout, as well as non-axisymmetric stagger angle and tip clearance layouts, were studied on a four-stage low-speed research compressor test rig. Experimental measurements and numerical simulations were conducted to obtain the overall performance, interstage aerodynamic parameters, and non-axisymmetric properties. The test results show that the two non-axisymmetric layouts reduce compressor efficiency compared with the prototype, but the non-axisymmetric clearance layout increases the prototype stall margin by 0.67%. Numerical simulation analysis reveals that in the near-stall condition, when the low-energy fluid from the large clearance sector passes through the small clearance sector, the high-entropy region is decomposed and the unstable fluid is reconstructed, thus alleviating the stall characteristics. The original measurement data obtained in this paper calibrates the numerical simulation tool and provides a reference for further clarifying the actual flow field characteristics of high-pressure compressors.

Key words: axial compressor, non-axisymmetric layout, manufacturing deviation, experimental measurement, numerical simulation, aerodynamic performance

CLC Number:

V231.3

WU Xiaolong, XIA Kailong, MENG Dejun, HAO Shengchun, ZHU Mingmin. Experimental and Numerical Simulation Study of Compressors with Non-Axisymmetric Layouts[J]. Journal of Shanghai Jiao Tong University, 2025, 59(12): 1916-1928.

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参数	IGV	R1	S1
流量系数	—	0.58	0.58
叶片数	80	53	79
设计转速/(r·min^-1)	—	900	—
弦长(中径)/mm	108.3	153.9	120.6
轮毂比	—	0.88	0.88
稠度(中径)	—	1.30	1.02
展弦比(中径)	—	0.82	1.06

工况点	类别	流量/(kg·s^-1)	无量纲流量	总压比	效率/%
DP	试验	15.249	0.764	1.073 5	80.77
	数值	15.561	0.779	1.071 8	83.69
NC	试验	19.963	1.000	1.009 0	19.61
	数值	19.984	1.000	1.008 7	22.19
NS	试验	13.618	0.682	1.079 9	78.97
	数值	13.484	0.675	1.077 4	80.97

试验件	工况点	流量/(kg·s^-1)	无量纲流量	总压比	效率/%	裕度/%
原型	DP	15.249	0.764	1.073 5	80.77	12.64
	NC	19.963	1	1.009 0	19.61	12.64
	NS	13.618	0.685	1.079 9	78.97	12.64
非轴对称安装角	DP	15.160	0.764	1.073 6	80.29	12.72
	NC	19.836	1	1.009 1	19.74	12.72
	NS	13.531	0.682	1.080 1	78.58	12.72

试验件	工况点	流量/(kg·s^-1)	无量纲流量	总压比	效率/%	裕度/%
原型	DP	15.249	0.764	1.073 5	80.77	12.64
	NC	19.963	1	1.009 0	19.61	12.64
	NS	13.618	0.685	1.079 9	78.97	12.64
非轴对称间隙	DP	15.127	0.762	1.073 3	80.16	13.31
	NC	19.851	1	1.009 0	19.67	13.31
	NS	13.430	0.677	1.079 7	78.15	13.31