A multidisciplinary optimization system and its application to the design of a small radial compressor impeller are presented. The method uses a genetic algorithm and artificial neural network to find a compromise between the conflicting demands of high efficiency and low centrifugal stresses in the blades. Concurrent analyses of the aero performance and stress predictions replace the traditional time consuming sequential design approach. The aerodynamic performance, predicted by a 3D Navier–Stokes solver, is maximized while limiting the mechanical stresses to a maximum value. The stresses are calculated by means of a finite element analysis, and controlled by modifying the blade camber, lean, and thickness at the hub. The results show that it is possible to obtain a significant reduction of the centrifugal stresses in the blades without penalizing the performance.
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e-mail: verstraete@vki.ac.be
e-mail: alsalihi@vki.ac.be
e-mail: vdb@vki.ac.be
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July 2010
Research Papers
Multidisciplinary Optimization of a Radial Compressor for Microgas Turbine Applications
T. Verstraete,
e-mail: verstraete@vki.ac.be
T. Verstraete
von Karman Institute for Fluid Dynamics
, Waterloose Steenweg 72, 1640 Sint-Genesius-Rode, Belgium
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Z. Alsalihi,
e-mail: alsalihi@vki.ac.be
Z. Alsalihi
von Karman Institute for Fluid Dynamics
, Waterloose Steenweg 72, 1640 Sint-Genesius-Rode, Belgium
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R. A. Van den Braembussche
e-mail: vdb@vki.ac.be
R. A. Van den Braembussche
von Karman Institute for Fluid Dynamics
, Waterloose Steenweg 72, 1640 Sint-Genesius-Rode, Belgium
Search for other works by this author on:
T. Verstraete
von Karman Institute for Fluid Dynamics
, Waterloose Steenweg 72, 1640 Sint-Genesius-Rode, Belgiume-mail: verstraete@vki.ac.be
Z. Alsalihi
von Karman Institute for Fluid Dynamics
, Waterloose Steenweg 72, 1640 Sint-Genesius-Rode, Belgiume-mail: alsalihi@vki.ac.be
R. A. Van den Braembussche
von Karman Institute for Fluid Dynamics
, Waterloose Steenweg 72, 1640 Sint-Genesius-Rode, Belgiume-mail: vdb@vki.ac.be
J. Turbomach. Jul 2010, 132(3): 031004 (7 pages)
Published Online: March 24, 2010
Article history
Received:
August 1, 2008
Revised:
February 26, 2009
Online:
March 24, 2010
Published:
March 24, 2010
Citation
Verstraete, T., Alsalihi, Z., and Van den Braembussche, R. A. (March 24, 2010). "Multidisciplinary Optimization of a Radial Compressor for Microgas Turbine Applications." ASME. J. Turbomach. July 2010; 132(3): 031004. https://doi.org/10.1115/1.3144162
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