This is the second part of a two-part paper. First, the design-optimization system based on the adjoint gradient solution approach as described in Part I is introduced. Several test cases are studied for further validation and demonstration of the methodology and implementation. The base-line adjoint method as applied to realistic 3D configurations is demonstrated in the redesign of the NASA rotor 67 at a near-choke condition, leading to a 1.77% efficiency gain. The proposed adjoint mixing plane is applied to the redesign of a transonic compressor stage (DLR compressor stage) and an IGV-rotor-stator configuration of a Siemens industrial compressor at a single-operating point, both producing measurably positive efficiency gains. An examination on the choice of the operating mass flow condition as the basis for the performance optimization, however, highlights the limitation of the single-point approach for practical applications. For the three-row compressor configuration, a near peak-efficiency point based redesign leads to a measurable reduction in the choke mass flow, while a near-choke point based redesign leads to a significant performance drop in other flow conditions. Subsequently, a parallel multipoint approach is implemented. The results show that a two-point design optimization can produce a consistently better performance over a whole range of mass flow conditions compared with the original design. In the final case, the effectiveness of the present method and system is demonstrated by a redesign applied to a seven-row industrial compressor at the design point, leading to a remarkable 2.4% efficiency gain.
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April 2010
Research Papers
Adjoint Aerodynamic Design Optimization for Blades in Multistage Turbomachines—Part II: Validation and Application
D. X. Wang,
D. X. Wang
School of Engineering,
Durham University
, Durham DH1 3LE, UK
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L. He,
L. He
Department of Engineering Science,
Oxford University
, Parks Road, Oxford OX1 3PJ, UK
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Y. S. Li,
Y. S. Li
Siemens Industrial Turbomachinery Ltd.
, Ruston House, P.O. Box 1, Waterside South, Lincoln LN5 7FD, UK
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R. G. Wells
R. G. Wells
Siemens Industrial Turbomachinery Ltd.
, Ruston House, P.O. Box 1, Waterside South, Lincoln LN5 7FD, UK
Search for other works by this author on:
D. X. Wang
School of Engineering,
Durham University
, Durham DH1 3LE, UK
L. He
Department of Engineering Science,
Oxford University
, Parks Road, Oxford OX1 3PJ, UK
Y. S. Li
Siemens Industrial Turbomachinery Ltd.
, Ruston House, P.O. Box 1, Waterside South, Lincoln LN5 7FD, UK
R. G. Wells
Siemens Industrial Turbomachinery Ltd.
, Ruston House, P.O. Box 1, Waterside South, Lincoln LN5 7FD, UKJ. Turbomach. Apr 2010, 132(2): 021012 (11 pages)
Published Online: January 13, 2010
Article history
Received:
July 17, 2008
Revised:
February 9, 2009
Online:
January 13, 2010
Published:
January 13, 2010
Connected Content
A companion article has been published:
Adjoint Aerodynamic Design Optimization for Blades in Multistage Turbomachines—Part I: Methodology and Verification
Citation
Wang, D. X., He, L., Li, Y. S., and Wells, R. G. (January 13, 2010). "Adjoint Aerodynamic Design Optimization for Blades in Multistage Turbomachines—Part II: Validation and Application." ASME. J. Turbomach. April 2010; 132(2): 021012. https://doi.org/10.1115/1.3103928
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