Numerical and experimental analysis of self-induced instabilities of straight cavitating vortex

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F26%3A0200140" target="_blank" >RIV/00216305:26210/26:0200140 - isvavai.cz</a>
Result on the web
<a href="https://dspace.zcu.cz/items/73687271-c9ee-4ba3-8786-c13e81367ddf" target="_blank" >https://dspace.zcu.cz/items/73687271-c9ee-4ba3-8786-c13e81367ddf</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Numerical and experimental analysis of self-induced instabilities of straight cavitating vortex
Original language description
Cavitating vortices are a well-documented and critical phenomenon in hydraulic machinery, known to induce significant pressure fluctuations, mechanical vibrations, and potential structural damage. These unsteady flow structures can emerge even in small-scale hydraulic machines, particularly under off-design operating conditions. This study investigates the development and behavior of a straight cavitating vortex that forms downstream of a centrifugal pump that operates in reverse mode (turbine mode). Since the pump geometry is originally optimized for pumping applications, the onset of vortex-induced cavitation occurs even at the best efficiency operating points. The research combines CFD simulations and experimental measurements to analyze the flow field and characterize the unsteady behavior of the cavitating vortex. Special attention is paid to self-induced instabilities that arise due to the complex interaction between the cavitating vortex core and the surrounding mean flow.
Czech name
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Czech description
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Project
<a href="/en/project/GA23-06159S" target="_blank" >GA23-06159S: Vortical structures: advanced identification and efficient numerical simulation</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2026
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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