Hydraulic Transients in the Long Diversion-Type Hydropower Station with a Complex Differential Surge Tank

Based on the theory of hydraulic transients and the method of characteristics (MOC), a mathematic model of the differential surge tank with pressure-reduction orifices (PROs) and overflow weirs for transient calculation is proposed. The numerical model of hydraulic transients is established using th...

Full description

Bibliographic Details
Main Authors:	Yu, Xiaodong, Zhang, Jian, Zhou, Ling
Format:	Online
Language:	English
Published:	Hindawi Publishing Corporation 2014
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4124250/

id	pubmed-4124250
recordtype	oai_dc
spelling	pubmed-41242502014-08-17 Hydraulic Transients in the Long Diversion-Type Hydropower Station with a Complex Differential Surge Tank Yu, Xiaodong Zhang, Jian Zhou, Ling Research Article Based on the theory of hydraulic transients and the method of characteristics (MOC), a mathematic model of the differential surge tank with pressure-reduction orifices (PROs) and overflow weirs for transient calculation is proposed. The numerical model of hydraulic transients is established using the data of a practical hydropower station; and the probable transients are simulated. The results show that successive load rejection is critical for calculating the maximum pressure in spiral case and the maximum rotating speed of runner when the bifurcated pipe is converging under the surge tank in a diversion-type hydropower station; the pressure difference between two sides of breast wall is large during transient conditions, and it would be more serious when simultaneous load rejections happen after load acceptance; the reasonable arrangement of PROs on breast wall can effectively decrease the pressure difference. Hindawi Publishing Corporation 2014 2014-07-15 /pmc/articles/PMC4124250/ /pubmed/25133213 http://dx.doi.org/10.1155/2014/241868 Text en Copyright © 2014 Xiaodong Yu et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Yu, Xiaodong Zhang, Jian Zhou, Ling
spellingShingle	Yu, Xiaodong Zhang, Jian Zhou, Ling Hydraulic Transients in the Long Diversion-Type Hydropower Station with a Complex Differential Surge Tank
author_facet	Yu, Xiaodong Zhang, Jian Zhou, Ling
author_sort	Yu, Xiaodong
title	Hydraulic Transients in the Long Diversion-Type Hydropower Station with a Complex Differential Surge Tank
title_short	Hydraulic Transients in the Long Diversion-Type Hydropower Station with a Complex Differential Surge Tank
title_full	Hydraulic Transients in the Long Diversion-Type Hydropower Station with a Complex Differential Surge Tank
title_fullStr	Hydraulic Transients in the Long Diversion-Type Hydropower Station with a Complex Differential Surge Tank
title_full_unstemmed	Hydraulic Transients in the Long Diversion-Type Hydropower Station with a Complex Differential Surge Tank
title_sort	hydraulic transients in the long diversion-type hydropower station with a complex differential surge tank
description	Based on the theory of hydraulic transients and the method of characteristics (MOC), a mathematic model of the differential surge tank with pressure-reduction orifices (PROs) and overflow weirs for transient calculation is proposed. The numerical model of hydraulic transients is established using the data of a practical hydropower station; and the probable transients are simulated. The results show that successive load rejection is critical for calculating the maximum pressure in spiral case and the maximum rotating speed of runner when the bifurcated pipe is converging under the surge tank in a diversion-type hydropower station; the pressure difference between two sides of breast wall is large during transient conditions, and it would be more serious when simultaneous load rejections happen after load acceptance; the reasonable arrangement of PROs on breast wall can effectively decrease the pressure difference.
publisher	Hindawi Publishing Corporation
publishDate	2014
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4124250/
_version_	1613121746932596736

Hydraulic Transients in the Long Diversion-Type Hydropower Station with a Complex Differential Surge Tank

Similar Items