Numerical Optimization of Combined Adjustment of Multi-Row Variable Inlet Guide Vane and Stators in a Multistage Axial-Flow Compressor

作者：Liao, Ji Xiang; Jiang, Bin; Lv, Cong Peng; Zheng, Qun; Qiu, Yi; Wang, Guo Qiang

来源：Journal of Propulsion Technology, 2017, 38(2): 334-340.

DOI：10.13675/j.cnki.tjjs.2017.02.012

• Characteristic lines
• Inlet guide vane
• Interface program
• Numerical optimizations
• Objective functions
• Optimization design
• Stepless adjustment
• Surge margin

In order to reduce the dependence on experiments in the combined adjustment of multi-row variable inlet guide vane and stators in a multistage axial-flow compressor, an optimization design platform was constructed by Isight software, HARIKA algorithm and some self-compiled interface programs. This optimization design platform quantified the distances between the original surge margin boundary line and the objective surge margin boundary line as an objective function, which is given according to the original characteristic lines of compressor, so the adjustive angles of inlet guide vane and stators are easily obtained at the diffierent rotating speed to realize the stepless adjustment. This platform was used in a eight-stage axial-flow compressor, the results show that the ability to regulate the inlet guide vane and the stators is limited by the number of adjustive rows of blades, so it need to balance the number of adjustive rows of blades to achieve the desired goal. The surge margin of the compressor moves up and left greatly at the off-design speed after optimization, for example, the mass flow reduces by 17.94% and pressure ratio increases by 4.93% near stall point at 70% rotating speed in Case 2, so the aerodynamic stability of compressor is improved at the low rotating speed. Finally, the setting angles of inlet guide vane and stators obtained from one-dimensional optimization are substituted in 3-D software to compute the characteristic lines of compressor, the results demonstrate the feasibility and effectiveness of the optimization design platform.

• 出版日期2017
• 单位哈尔滨工程大学