CFD as a Decision Tool for Pumped Storage Hydropower Plant Flow Measurement Method

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F23%3A00363887" target="_blank" >RIV/68407700:21110/23:00363887 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.3390/w15040779" target="_blank" >https://doi.org/10.3390/w15040779</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/w15040779" target="_blank" >10.3390/w15040779</a>

Result language

angličtina

Original language name

CFD as a Decision Tool for Pumped Storage Hydropower Plant Flow Measurement Method

Original language description

Suitable and accurate flow measurement in pumped storage hydropower plants (PSP) is a chal-lenging task due to the entirely different hydraulic behaviour of the penstock. This study pre-sents a novel approach to choosing a suitable flow measurement method and position. The focus is on the flow measurement in a specific short penstock of the largest peak-load hydropower plant, Orlík, after its transformation to a PSP. Our approach is based on three main pillars: nu-merical modelling of fluid flow (ANSYS CFX), standards, and scientific literature. First, the steady-state numerical model output for the current state is compared to historical measure-ments of point velocities using current meters and measured hydraulic losses in the penstock. Subsequently, for the planned conversion to the reversible Francis turbine, including shape modifications of the flow paths, a steady numerical simulation of the flow in the penstock was performed in both turbine and pump modes. By analysing the resulting pressure and velocity fields and comparing them to standards and scientific literature, the values of the uncertainty in the flow measurement were calculated. The outcome is a straightforward evaluation and com-parison of three main flow measurement methods: current meter, pressure–time, and ultrasonic transit time.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20101 - Civil engineering

Project

—

Continuities

N - Vyzkumna aktivita podporovana z neverejnych zdroju

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Water

ISSN

2073-4441

e-ISSN

2073-4441

Volume of the periodical

15

Issue of the periodical within the volume

4

Country of publishing house

CH - SWITZERLAND

Number of pages

26

Pages from-to

1-26

UT code for WoS article

000942020100001

EID of the result in the Scopus database

2-s2.0-85149196678