Multi-objective shape optimization of a hydraulic turbine runner using efficiency, strength and weight criteria

Denis V. Chirkov, Anna S. Ankudinova, Artem E. Kryukov, Sergey G. Cherny, Vladimir A. Skorospelov

Результат исследования: Научные публикации в периодических изданияхстатья

5 Цитирования (Scopus)

Аннотация

An approach for multi-discipline automatic optimization of the hydraulic turbine runner shape is presented. The approach accounts hydraulic efficiency, mechanical strength and the weight of the runner. In order to effectively control the strength and weight of the runner, a new parameterization of the blade thickness function is suggested. Turbine efficiency is evaluated through numerical solution of Reynolds-averaged Navier-Stokes equations, while the finite element method is used to evaluate the von Mises stress in the runner. An objective function, being the weighted sum of maximal stress and the blade volume, is suggested to account for both the strength and weight of the runner. Multi-objective genetic algorithm is used to solve the optimization problem. The suggested approach has been applied to automatic design of a Francis turbine runner. Series of three-objective optimization runs have been carried out. The obtained results clearly indicate that simultaneous account of stress and weight objectives accompanied by thickness variation allows obtaining high efficiency, light and durable turbine runners.

Язык оригиналаанглийский
Страницы (с-по)627-640
Число страниц14
ЖурналStructural and Multidisciplinary Optimization
Том58
Номер выпуска2
DOI
СостояниеОпубликовано - авг 2018

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