Computing and Library Services - delivering an inspiring information environment

Ported shroud flow processes and their effect on turbocharger compressor operation

Sharma, Sidharath, Jupp, Martyn, Nickson, Ambrose and Allport, John (2017) Ported shroud flow processes and their effect on turbocharger compressor operation. In: ASME Turbo Expo: Turbomachinery Technical Conference & Exposition, 26-30 June 2017, Charlotte, North Carolina, USA.

[img] PDF - Accepted Version
Restricted to Repository staff only

Download (1MB)


The ported shroud (PS) self-recirculating casing treatment is widely used to delay the onset of the surge by enhancing the aerodynamic stability of the turbocharger compressor. The increase in the stable operation region of the turbocharger compressor is achieved by recirculating the low momentum fluid that blocks the blade passage to the compressor inlet through a ported shroud cavity. While the ported shroud design delays surge, it comes with a small penalty in efficiency.
This work presents an investigation of the flow processes associated with a ported shroud compressor and quantifies the effect of these flow mechanisms on the compressor operation. The full compressor stage is numerically modelled using a Reynolds Averaged Navier-Stokes (RANS) approach employing the shear stress transport (SST) turbulence model for steady state simulations at the design and near surge conditions. The wheel rotation is modelled using a multiple reference frame (MRF) approach. The results show that the flow exits the PS cavity at the near surge condition in the form of three jet-like structures of varying velocity amplitudes. Net entropy generation in the compressor model is used to assess the influence of the ported shroud design on the compressor losses, and the results indicate a small Inlet-PS mixing region is the primary source of entropy generation in the near surge conditions. The analysis also explores the trends of entropy generation at the design and the near surge condition across the different speed lines. The results show that the primary source of entropy generation is the impeller region for the design condition and the inlet-PS cavity region for the near surge condition.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology > TJ Mechanical engineering and machinery
Schools: School of Computing and Engineering
School of Computing and Engineering > Turbocharger Research Institute
Related URLs:

[1] W. Knecht, "Diesel engine development in view of reduced emission standards," Energy, vol. 33, pp. 264-271, 2// 2008.
[2] C. Rodgers, "Centrifugal Compressor Inlet Guide Vanes for Increased Surge Margin," Journal of Turbomachinery, vol. 113, p. 696, 1991.
[3] A. Whitfield and A. H. Abdullah, "The performance of a centrifugal compressor with high inlet prewhirl," Journal of Turbomachinery, vol. 120, pp. 487-493, 1998.
[4] I. MacDougal and R. L. Elder, "Improvement of operating range in a small, high speed, centrifugal compressor using casing treatments," in I Mech E Conference Publications (Institution of Mechanical Engineers), 1982, pp. 19-26.
[5] P. A. Eynon, A. Whitfield, M. R. Firth, A. J. Parkes, and R. Saxton, A study of the flow characteristics in the inducer bleed slot of a centrifugal compressor. New York: The American Society of Mechanical Engineers, 1996.
[6] F. B. Fisher, "Application of Map Width Enhancement Devices to Turbocharger Compressor Stages," 1988.
[7] R. Hunziker, H. P. Dickmann, and R. Emmrich, "Numerical and experimental investigation of a centrifugal compressor with an inducer casing bleed system," Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, vol. 215, pp. 783-791, 2001.
[8] M. Yang, R. Martinez-Botas, Y. Zhang, and X. Zheng, "Effect of Self-Recirculation-Casing Treatment on High Pressure Ratio Centrifugal Compressor," Journal of Propulsion and Power, pp. 1-9, 2016.
[9] X. Zheng and C. Lan, "Improvement in the performance of a high-pressure-ratio turbocharger centrifugal compressor by blade bowing and self-recirculation casing treatment," Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, vol. 228, pp. 73-84, 2014.
[10] W. Jansen, A. Carter, and M. Swarden, "Improvements in surge margin for centrifugal compressors," AGARD Centrifugal Compressors, Flow Phenomena and Performance 17 p(SEE N 81-17447 08-37), 1980.
[11] S. Sivagnanasundaram, S. Spence, J. Early, and B. Nikpour, "Experimental and numerical analysis of a classical bleed slot system for a turbocharger compressor," in Proceedings of IMechE 10th International Conference on Turbochargers and Turbocharging, ed, 2012, pp. 325-341.
[12] S. Sivagnanasundaram, S. Spence, J. Early, and B. Nikpour, "An impact of various shroud bleed slot configurations and cavity vanes on compressor map width and the inducer flow field." vol. 7, ed, 2011, pp. 2009-2021.
[13] S. Sivagnanasundaram, S. Spence, and J. Early, "Map Width Enhancement Technique for a Turbocharger Compressor," Journal of Turbomachinery, vol. 136, pp. 061002-061002, 2013.
[14] H. Tamaki, "Effect of Recirculation Device With Counter Swirl Vane on Performance of High Pressure Ratio Centrifugal Compressor," Journal of Turbomachinery, vol. 134, pp. 051036-051036, 2012.
[15] G. A. Christou, "Fluid mechanics of ported shroud centrifugal compressor for vehicular turbocharger applications," Ph. D., Massachusetts Institute of Technology. Department of Aeronautics and Astronautics., Massachusetts Institute of Technology, Massachusetts, 2015.
[16] B. Semlitsch, V. Jyothishkumar, M. Mihaescu, L. Fuchs, E. Gutmark, and M. Gancedo, "Numerical flow analysis of a centrifugal compressor with ported and without ported shroud," SAE Technical Papers, vol. 1, 2014.
[17] H. Chen and V.-M. Lei, "Casing Treatment and Inlet Swirl of Centrifugal Compressors," Journal of Turbomachinery, vol. 135, p. 041010, 2013.
[18] A. C. A. Research, ANSYS CFX-Solver Theory Guide. USA: ANSYS, Inc., 2013.
[19] H. Chen, S. Guo, X. C. Zhu, Z. H. Du, and S. Zhao, "Numerical simulations of onset of volute stall inside a centrifugal compressor," in Proceedings of the ASME Turbo Expo, 2008.
[20] F. R. Menter, "Two-equation eddy-viscosity turbulence models for engineering applications," AIAA Journal, vol. 32, pp. 1598-1605, 1994/08/01 1994.
[21] X. Q. Zheng, J. Huenteler, M. Y. Yang, Y. J. Zhang, and T. Bamba, "Influence of the volute on the flow in a centrifugal compressor of a high-pressure ratio turbocharger," Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, vol. 224, pp. 1157-1169, December 1, 2010 2010.
[22] D. C. Wilcox, Turbulence modeling for CFD vol. 2: DCW industries La Canada, CA, 1998.
[23] P. Chow, M. Cross, and K. Pericleous, "A natural extension of the conventional finite volume method into polygonal unstructured meshes for CFD application," Applied Mathematical Modelling, vol. 20, pp. 170-183, 1996/02/01 1996.
[24] Z. Sun, C. Tan, and D. Zhang, "Flow field structures of the impeller backside cavity and its influences on the centrifugal compressor." vol. 7, ed, 2009, pp. 1349-1360.
[25] G. Matthieu, G. Ephraim, E. Guillou, and M. Ashraf, "PIV Measurements of Flow in Recirculation Cavities at the Inlet of a Centrifugal Compressor," in 50th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, ed: American Institute of Aeronautics and Astronautics, 2012.
[26] G. Després, G. N. Boum, F. Leboeuf, D. Chalet, P. Chesse, and A. Lefebvre, "Simulation of near surge instabilities onset in a turbocharger compressor," Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, vol. 227, pp. 665-673, September 1, 2013 2013.

Depositing User: Sidharath Sharma
Date Deposited: 30 May 2017 11:58
Last Modified: 21 Aug 2017 09:58


Downloads per month over past year

Repository Staff Only: item control page

View Item View Item

University of Huddersfield, Queensgate, Huddersfield, HD1 3DH Copyright and Disclaimer All rights reserved ©