Flow characterization in an axial micro-hydroturbine model

Результат исследования: Научные публикации в периодических изданияхстатья по материалам конференциирецензирование


The flow characteristics behind the runner of an air model of a propeller-type micro-hydroturbine were studied in detail by varying the operation conditions from part-load to high overload. The Reynolds number was varied from 3×104 to 9×104, and the swirl number from 0.7 to -0.4. An automated laser-Doppler anemometer (LDA) system for non-contact optical diagnostics was used to perform detailed measurements of the flow field distribution, including the profiles of two components of averaged velocities and pulsations and LDA signal spectra. Based on the results, a correlation was found between the identified features of the development of the flow structure under changing operating conditions of the hydroturbine and the nature of the evolution of the integral swirl number, which determines the state of the swirling flow. This can be used to develop recommendations for expanding the range of regulation of hydroturbine operation while maintaining high efficiency.

Язык оригиналаанглийский
Номер статьи012002
ЖурналJournal of Physics: Conference Series
Номер выпуска1
СостояниеОпубликовано - 7 дек. 2021
Событие16th International Conference Optical Methods of Flow Investigation, OMFI 2021 - Moscow, Российская Федерация
Продолжительность: 28 июн. 20212 июл. 2021

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