Simulation and dynamics of secondary vortex structures induced by low discharge and high swirl in cylindrical pipe
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F24%3APU154923" target="_blank" >RIV/00216305:26210/24:PU154923 - isvavai.cz</a>
Result on the web
<a href="https://naos-be.zcu.cz/server/api/core/bitstreams/071f4a22-1c5d-44ea-a834-5288f59b065b/content" target="_blank" >https://naos-be.zcu.cz/server/api/core/bitstreams/071f4a22-1c5d-44ea-a834-5288f59b065b/content</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Simulation and dynamics of secondary vortex structures induced by low discharge and high swirl in cylindrical pipe
Original language description
The fluid flow in pipe with low discharge and high swirl is convenient for formation of secondary flow structures. The onset of secondary vortex structures is driven by flow disturbances, i.e., pressure pulsations, local change of geometry, etc. Such situation might for example appears in the suction part of centrifugal pump operated at low discharge. Once these flow conditions appear in the suction of centrifugal pump, the flow is unstable and the pump performance is affected in terms of delivery head drop. The vortex structures forms flow blockage and since their spatial shape is not axi-symmetric there is also significant flow dynamics. This work presents the results of numerical calculation by means of CFD simulation of corresponding flow regime of centrifugal pump. The focus is on description of vortex structures dynamics which is important for further application of flow control devices to enhance pump operation.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
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OECD FORD branch
20303 - Thermodynamics
Result continuities
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)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů