Abstract
In the operation of a centrifugal compressor of turbocharger, instability phenomena such as rotating stall and surge are induced at a lower flow rate close to the maximum pressure ratio. In this study, the compressed air at the exit of centrifugal compressor was re-circulated and injected to the impeller inlet by using two injection nozzles in order to suppress the surge phenomenon. The most effective circumferential position was examined to reduce the flow rate at the surge inception. Moreover, the influences of the injection on the fluctuating property of the flow field before and after the surge inception were investigated by examining the frequency of static pressure fluctuation on the wall surface and visualizing the compressor wall surface by oil-film visualization technique.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
Abbreviations
- b :
-
blade height (mm)
- D :
-
diameter (mm)
- G :
-
mass flow rate (kg/s)
- G I :
-
critical flow rate for surge inception in Injection
- G max :
-
maximum flow rate
- G N :
-
critical flow rate for surge inception in Normal
- G R :
-
flow rate in injection
- N :
-
rotational speed (r/min)
- P a :
-
measured atmospheric pressure (Pa)
- P a0 :
-
standard atmospheric pressure (Pa)
- I RSM :
-
improvement rate of surge margin (%)
- I ROR :
-
improvement rate of operating range(%)
- R RI :
-
recirculation ratio (%)
- T 0 :
-
standard temperature (K)
- T 1 :
-
measured temperature (K)
- Z:
-
number of impeller blades
- σt :
-
total pressure ratio
- 1:
-
impeller inlet
- 2:
-
impeller outlet
References
Suzuki, A., Tsujita, H., and Mizuki, S., Passive Control of Surge For Centrifugal Compressor by Using Resonator, Proceedings of the Fourth International Symposium on Experimental and Computational Aerothermodynamics of Internal Flows, Vol. II, pp. 226–233, Dresden, Germany, 1999.
Mizuki, S., Tsujita, H., and Hishinuma, Y., Control of Surge for Centrifugal Compression System by Using a Bouncing Ball, ASME Paper 2000-GT-429, Munich, 2000.
Willemas, F., and Jager, B. De, One-Sided Control of Surge in A Centrifugal Compressor System, ASME Paper 2000-GT-527, Munich, 2000.
Skoch, G. J., Experimental Investigation of Diffuser Hub Injection to Improve Centrifugal Compressor Stability, NASA/TM-2004-213182, 2004.
Chen, H. and Lei, V., Casing Treatment & Inlet Swirl of Centrifugal Compressors, Proceeding of ASME GT2012 -69340, Copenhagen, Denmark, 2012.
Tamaki, H., Zheng, X. and Zhang Y., Experimental Investigation of High Pressure Ratio Centrifugal Compressor with Axisymmetric and Non-Axisymmetric Recirculation device, Proceeding of ASME GT2012-68219, Copenhagen, Denmark, 2012.
Gu, R., and Yashiro, M., Surge Control for Centrifugal Compressor of Turbocharger, JSAE, Vol.36, No.2, 2005.
Gu, R., Mizuki, S., Tsujita, H., and Ikeda, S., Surge Control of Centrifugal Compressor by Inducer Tip Injection, Proceedings of IGTC2007 Tokyo TS-030, Tokyo, Japan, 2007.
Toshiyuki Hirano, Mizuki Takano, Hoshio Tsujita, Effect of Double Air Injection on Performance Characteristics of Centrifugal Compressor, Journal of Thermal Science Vol.24, No.1, pp.10–16, 2015.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Hirano, T., Ogawa, T., Yasui, R. et al. Effect of double air injection on performance characteristics of centrifugal compressor. J. Therm. Sci. 26, 11–17 (2017). https://doi.org/10.1007/s11630-017-0903-1
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11630-017-0903-1