Physics-based Surrogate Optimization of Francis Turbine Runner Blades, Using Mesh Adaptive Direct Search and Evolutionary Algorithms

Bahrami, Salman; Tribes, Christophe; von Fellenberg, Sven; Vu, Thi C.; Guibault, Francois

doi:http://dx.doi.org/10.5293/IJFMS.2015.8.3.209

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자료유형: 학술저널

저자정보: Bahrami, Salman Tribes, Christophe von Fellenberg, Sven Vu, Thi C. Guibault, Francois

저널정보: 한국유체기계학회 International Journal of Fluid Machinery and Systems International Journal of Fluid Machinery and Systems Vol.8 No.3

발행연도: 2015.9

수록면: 209 - 219 (11page)

DOI: http://dx.doi.org/10.5293/IJFMS.2015.8.3.209

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A robust multi-fidelity optimization methodology has been developed, focusing on efficiently handling industrial runner design of hydraulic Francis turbines. The computational task is split between low- and high-fidelity phases in order to properly balance the CFD cost and required accuracy in different design stages. In the low-fidelity phase, a physics-based surrogate optimization loop manages a large number of iterative optimization evaluations. Two derivative-free optimization methods use an inviscid flow solver as a physics-based surrogate to obtain the main characteristics of a good design in a relatively fast iterative process. The case study of a runner design for a low-head Francis turbine indicates advantages of integrating two derivative-free optimization algorithms with different local- and global search capabilities.

#Francis turbine runner blade #Physics-based surrogate optimization #multi-fidelity algorithm

참고문헌 (26)

참고문헌 신청

[학술대회논문] - G. Holmes / 1982 / Application of three-dimensional finite element potential flow analysis to hydraulic turbines / the International Symposium on Refined Modeling of Flows

[학술대회논문] - J. M. Franco-Nava / 2009 / CFD performance evaluation and runner blades design optimization in a Francis turbine / ASME 2009 Fluids Engineering Division Summer Meeting

[학술대회논문] - I. M. Pilev / 2012 / Multiobjective optimal design of runner blade using efficiency and draft tube pulsation criteria / IOP Conference Series: Earth and Environmental Science 15 : 032003 ~

[학술대회논문] - S. Derakhshan / 2012 / Optimal design of axial hydro turbine for micro hydropower plants / Optimal design of axial hydro turbine for micro hydropower plants," IOP Conference Series: Earth and Environmental Science 15 : 042029 ~

[학술대회논문] - H. Georgopoulou / 2008 / Constrained Multi-Objective Design Optimization of Hydraulic Components Using a Hierarchical Metamodel Assisted Evolutionary Algorithm. Part 1: Theory' / 24th IAHR Symposium on Hydraulic Machinery and Systems

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