Abstract
In order to reduce the specific fuel consumption of an aero-engine and improve its economy, a partial intake strategy in a pre-swirl system is adopted in the cruising condition to reduce the bleeding air flow from the compressor. The influence of partial intake air on the characteristic parameters such as air supply mass flow rate and air supply temperature of the pre-swirl system is studied. The simulation is conducted mainly for the presence of impellers in the cover-plate cavity under the operating conditions where partial nozzle flow paths are open (full admission/intake) and closed (partial admission/intake). The calculation results show that the decrease of the air supply mass flow rate is smaller than that of the nozzle geometric flow area. With full admission, the fluctuation of the mass flow rate of a single supply hole ranges from −5.0% to 5.3%. The air supply temperature fluctuates by about 0.9K, with temperature non-uniformity coefficient ranging from −0.27% to 0.28%. After partial intake, the fluctuation amplitude of the air supply hole mass flow rate increases approximately 36%, and that of air supply temperature increases 2.1 times. Compared with the system without impellers, the impellers will reduce the decrease of the air supply mass flow rate, reduce the average air supply temperature by more than 2K, increase the non-uniformity range of the air supply mass flow rate by 66.7% and the non-uniformity range of the air supply temperature by about 2.6 times.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Liu, S.L., Tao, Z.: Heat Transfer and Secondary Air System of Gas Turbine Engine. Shanghai Jiao Tong University Press, Shanghai (2018)
Meierhofer, B., Franklin, C.J.: An investigation of a preswirled cooling airflow to a turbine disc by measuring the air temperature in the rotating channels. In: the ASME Gas Turbine Conference & Products Show, pp.1–8, ASME, Houston, Texas, United States (2001)
El-Oun, Z.B., Owen, J.M.: Preswirl blade-cooling effectiveness in an adiabatic rotor-stator system. J. Turbomach. 111(4), 522–529 (1989)
Dittmann, M., Geis, T., Schramm, V., et al.: Discharge coefficients of a pre-swirl system in secondary air system. In: Proceedings of the ASME Turbo Expo 2001: Power for Land, Sea and Air, pp. V003T01A009, ASME, Montreal, Canada (2001)
Bricaud, C., Geis, T., Dullenkopf, K., et al.: Measurement and analysis of aerodynamic and thermodynamic losses in pre-swirl system arrangements. In: Proceedings of the ASME Turbo Expo 2007: Power for Land, Sea and Air, pp.1115–1126, ASME, Montreal, Canada (2007)
Liu, G.W., Li, B.Y., Jiang, Z.W., et al.: Effects of pre-swirl angle on flow characteristics of pre-swirl nozzle. J. Propul. Technol. 33(5), 740–746 (2012)
Liu, G.W., Zhang, L., Wu, W.T., et al.: Numerical Simulations on the flow characteristics of the pre-swirl nozzles with different length-to-diameter ratios. J. Propul. Technol. 34(5), 644–650 (2013)
Liu, G.W., Zhang, L., Li, B.Y., et al.: Investigation on flow characteristics and temperature drop of an aerodynamic-hole typed pre-swirl nozzle. J. Propul. Technol. 34(3), 390–396 (2013)
Xue, B.: Research on Temperature Drop and Resistance Characteristics of a New Pre-Swirl System. Xi’an: Master’s Thesis of Northwestern Polytechnical University (2011)
Chen, Y.: Research on the Measurement of Discharge Coefficient and Flow Field of Irregular Pre-Swirl Nozzles. Xi’an: Master’s Thesis of Northwest University of Technology (2012)
Zhang, J.C., Wang, S.F., Yang, S.H., et al.: Experiment and drop of cooling air temperature and flow loss performance of pre-swirl cooling system. J. Aerosp. Power 26(12), 2698–2703 (2011)
Ciampoli, F., Chew, J., Shahpar, S., et al.: Automatic optimization of preswirl nozzle design. J. Eng. Gas Turbines Power 129(2), 387–393 (2007)
Javiya, U., Chew, J., Hills, N., et al.: A comparative study of cascade vanes and drilled nozzle designs for pre-swirl. In: Proceedings of the ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition, pp.913–920. ASME, Vancouver, Canada (2011)
Liu, Y.X., Liu, G.W., Kong, X.Z., et al.: Experimental testing and numerical analysis on the nozzle effects in preswirl system. J. Propul. Power 34(4), 1015–1025 (2018)
Tang, G.Q., Xue, W.P., Zeng, J., et al.: Design and study of low loss integrated pre-swirl nozzle. J. Propul. Technol. 41(09), 2011–2020 (2012)
Gupta, A.K., Ramerth, D., Ramachandran, D.: Numerical Simulation of TOBI flow: analysis of the cavity between a seal-plate and HPT disc with pumping vanes. In: Proceedings of the ASME Turbo Expo 2008: Power for Land, Sea and Air, pp.1571–1578. ASME, Berlin, Germany (2008)
Wu, C., Vaisman, B.: CFD analyses of HPT blade air delivery system with and without impellers. In: Proceedings of the ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition, pp.883–892. ASME, Vancouver, Canada (2011)
Wu, H.: Numerical Study on Temperature Drop and Power Consumption Characteristics of Pre-Swirl System. Xi’an: Northwestern Polytechnical University (2016)
Wu, H, Liu, G.W., Wu, Z.P., et al.: Measurement of pressures and temperatures in a cover-plate pre-swirl system. In: Proceedings of the ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition, pp. Vo5BT15A018, ASME, Oslo, Norway (2018)
Lin, A., Zhao, Y., Wang, J., et al.: Mechanism and theoretical analysis of temperature drop and power consumption in gas turbine engine pre-swirl system. Proc. CSEE 42(11), 4090–4102 (2022)
Lin, A., Liu, G., Wu, H., et al.: T mechanism and theoretical analysis of pressure ratio and entropy increase in a pre-swirl system of gas turbine engine. Acta Aeronautica et Astronatica Sinica 43(09), 299–314 (2022)
Lin, A., Liu, G., Wang, X., et al.: Comprehensive evaluations on performance and energy consumption of pre-swirl rotor-stator system in gas turbine engines. Energy Convers. Manage. 244(47), 114440 (2021)
Zhang, F., Wang, X., Li, J.: Numerical investigation on the flow and heat transfer characteristics in radial pre-swirl system with different fillet radius at the junction of inlet cavity and nozzle. Appl. Therm. Eng. 106, 1165–1175 (2016)
Liu, G., Wang, X., Gong, W., et al.: Prediction of the sealing flow effect on the temperature drop characteristics of a pre-swirl system in an aero-engine. Appl. Therm. Eng. 189(8), 116717 (2021)
Durgin, G.A., Bauer, R.C., Lee, C.P.: Modulated Turbine Cooling System. US Patent: 6050079, 2000-04-18
Kyritsis, V.E., Pilidis, P.: Performance evaluation for the application of variable turbine-cooling-bleeds in civil turbofans. In: Proceedings of the ASME Turbo Expo 2007: Power for Land, Sea and Air, pp.65–72. ASME, Montreal, Canada (2007)
Lei, Z., Liu, G.: Numerical analysis of air supply parameters and non-uniform characteristics in a cover-plate pre-swirl system with the adjustable flow path. Int. J. Energy Res. 45, 8763–8779 (2021)
Lei, Z., Liu, G., Gu, W.: Numerical simulation of effects of partial nozzle closure on uniformity in the pre-swirl air supply system. J. Aerosp. Power 35(05), 963–972 (2020)
Lei, Z., Liu, G., Wang, J.: Experimental investigations on effects of partial nozzle closure on air supply parameters in pre-swirl air supply system. J. Propul. Technol. 42(03), 522–531 (2021)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2024 Chinese Society of Aeronautics and Astronautics
About this paper
Cite this paper
Lei, Z., Yang, Y., Lin, A., Liu, G. (2024). Study on the Effect of Impeller on the Air Supply Parameters of a Partial Intake Pre-Swirl System in an Aero-Engine. In: Proceedings of the 6th China Aeronautical Science and Technology Conference. CASTC 2023. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-99-8864-8_66
Download citation
DOI: https://doi.org/10.1007/978-981-99-8864-8_66
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-99-8863-1
Online ISBN: 978-981-99-8864-8
eBook Packages: EngineeringEngineering (R0)