Numerical Research of the Best Depth and Location of the Circumferential Groove of Subsonic Compressor
A numerical study is carried out to understand the physical mechanism responsible for the different improvements in stall margin of an axial subsonic rotor with different circumferential casing grooves. And searching for the criterion of the circumferential casing treatment designing is also the aim of this study, considering the imperfections of the guidelines for get more effective casing configuratioa In this paper, eleven circumferential grooves configurations were discussed about the different effects on the changes of the operation range. Great quantities of computational simulation were performed with the help of a CFD software NUMECA. First, it is found that the proportion of the width to depth of the circumferential groove should be limited in a range, according to the analysis of the simulation results of three cases that have different numbers of grooves. Second, comparison was taken between three other structures which have different depth of grooves. The results proved the existence of most effective circumferential groove depth. Finally, the discussion on the effect of grooves location on the rotor performance was made by analyzing the improvements of stall margin in six configurations.
subsonic compressor numerical simulation stall margin circumferential groove depth and location
LIU Chuan-le CHU Wu-li ZHANG Hao-guang
School of Power and Energy, Northwestern Polytechnical University, Xian, China
国际会议
4th International Symposium on Jet Propulsion and Power Engineering(第四届喷气推进与动力工程国际会议 ISJPPE2012)
西安
英文
134-139
2012-09-10(万方平台首次上网日期,不代表论文的发表时间)