Influence of internal blade-interactions on the added mass and added damping of a prototype Kaplan turbine runner

Different from other types of hydraulic turbines, the fluid–structure coupling vibration behavior of Kaplan turbine runners has still been studied limited before. One problem is that their blades can rotate according to load changes, and the internal interactions among the blades via the flow field...

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Autores principales:	Ming Zhang, Qing-guang Chen
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	Kaplan turbine runner Internal blade-interactions Acoustic fluid–structure interaction One-way fluid–structure interaction Fourier Transformation Method Engineering (General). Civil engineering (General) TA1-2040
Acceso en línea:	https://doaj.org/article/8b2c207ec5d543f7a0a27fb7525172d1
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id	oai:doaj.org-article:8b2c207ec5d543f7a0a27fb7525172d1
record_format	dspace
spelling	oai:doaj.org-article:8b2c207ec5d543f7a0a27fb7525172d12021-12-02T04:59:36ZInfluence of internal blade-interactions on the added mass and added damping of a prototype Kaplan turbine runner1110-016810.1016/j.aej.2021.06.092https://doaj.org/article/8b2c207ec5d543f7a0a27fb7525172d12022-03-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1110016821004555https://doaj.org/toc/1110-0168Different from other types of hydraulic turbines, the fluid–structure coupling vibration behavior of Kaplan turbine runners has still been studied limited before. One problem is that their blades can rotate according to load changes, and the internal interactions among the blades via the flow field may produce an important influence on the added mass and added damping of the runner, particularly when the blade angle is small. In this paper, the influence of internal blade-interactions on the added mass and added damping of a prototype Kaplan turbine runner has been studied numerically. An isolated stage model from the end of the stay vanes to the bottom of the hub with six blades was considered for simulation. The Acoustic Fluid-Structure Interaction (FSI) technology based on the Finite Element Method was used to investigate the added mass effect first and to provide the modal shapes and initial frequencies for the following one-way FSI analysis based on the Finite Volume Method. The natural frequencies predicted by the Acoustic FSI were compared with those from the one-way FSI analysis to validate the simulations. Then, the influence of internal blade-interactions on the added mass and added damping, as well as the mechanisms, were analyzed.Ming ZhangQing-guang ChenElsevierarticleKaplan turbine runnerInternal blade-interactionsAcoustic fluid–structure interactionOne-way fluid–structure interactionFourier Transformation MethodEngineering (General). Civil engineering (General)TA1-2040ENAlexandria Engineering Journal, Vol 61, Iss 3, Pp 2376-2385 (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	Kaplan turbine runner Internal blade-interactions Acoustic fluid–structure interaction One-way fluid–structure interaction Fourier Transformation Method Engineering (General). Civil engineering (General) TA1-2040
spellingShingle	Kaplan turbine runner Internal blade-interactions Acoustic fluid–structure interaction One-way fluid–structure interaction Fourier Transformation Method Engineering (General). Civil engineering (General) TA1-2040 Ming Zhang Qing-guang Chen Influence of internal blade-interactions on the added mass and added damping of a prototype Kaplan turbine runner
description	Different from other types of hydraulic turbines, the fluid–structure coupling vibration behavior of Kaplan turbine runners has still been studied limited before. One problem is that their blades can rotate according to load changes, and the internal interactions among the blades via the flow field may produce an important influence on the added mass and added damping of the runner, particularly when the blade angle is small. In this paper, the influence of internal blade-interactions on the added mass and added damping of a prototype Kaplan turbine runner has been studied numerically. An isolated stage model from the end of the stay vanes to the bottom of the hub with six blades was considered for simulation. The Acoustic Fluid-Structure Interaction (FSI) technology based on the Finite Element Method was used to investigate the added mass effect first and to provide the modal shapes and initial frequencies for the following one-way FSI analysis based on the Finite Volume Method. The natural frequencies predicted by the Acoustic FSI were compared with those from the one-way FSI analysis to validate the simulations. Then, the influence of internal blade-interactions on the added mass and added damping, as well as the mechanisms, were analyzed.
format	article
author	Ming Zhang Qing-guang Chen
author_facet	Ming Zhang Qing-guang Chen
author_sort	Ming Zhang
title	Influence of internal blade-interactions on the added mass and added damping of a prototype Kaplan turbine runner
title_short	Influence of internal blade-interactions on the added mass and added damping of a prototype Kaplan turbine runner
title_full	Influence of internal blade-interactions on the added mass and added damping of a prototype Kaplan turbine runner
title_fullStr	Influence of internal blade-interactions on the added mass and added damping of a prototype Kaplan turbine runner
title_full_unstemmed	Influence of internal blade-interactions on the added mass and added damping of a prototype Kaplan turbine runner
title_sort	influence of internal blade-interactions on the added mass and added damping of a prototype kaplan turbine runner
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/8b2c207ec5d543f7a0a27fb7525172d1
work_keys_str_mv	AT mingzhang influenceofinternalbladeinteractionsontheaddedmassandaddeddampingofaprototypekaplanturbinerunner AT qingguangchen influenceofinternalbladeinteractionsontheaddedmassandaddeddampingofaprototypekaplanturbinerunner
_version_	1718400901362745344

Influence of internal blade-interactions on the added mass and added damping of a prototype Kaplan turbine runner

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