Effect of spiral vortices on the stability of vortex structures in the diffusor
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F19%3APU131786" target="_blank" >RIV/00216305:26210/19:PU131786 - isvavai.cz</a>
Result on the web
<a href="https://iopscience.iop.org/article/10.1088/1755-1315/240/2/022052" target="_blank" >https://iopscience.iop.org/article/10.1088/1755-1315/240/2/022052</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1755-1315/240/2/022052" target="_blank" >10.1088/1755-1315/240/2/022052</a>
Alternative languages
Result language
angličtina
Original language name
Effect of spiral vortices on the stability of vortex structures in the diffusor
Original language description
It is known that the cause of the instability of stationary vortex structures are the convective terms of the Navier-Stokes equations. Here, the formation of vortex structures is fundamentally influenced by the vector product of the velocity curl and the velocity vector. Spiral vortices are contingent on the zero value of this product and are one of the causes of the formation of a non-stationary rope in a diffusor. In the paper, equations of spiral vortices are derived and the condition of the vortex stability in a diffusor is determined depending on the existence of spiral vortices. In this sense, new forms of the Navier-Stokes equations are derived. It is possible to analyze the influence of boundary conditions on the stability of vortex structures. The theoretical knowledge is applied to the analysis of the stability of the vortex rope in a diffusor. In addition, a simple method for detecting the onset of the instability of vortex structures is presented.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20301 - Mechanical engineering
Result continuities
Project
<a href="/en/project/GA16-18316S" target="_blank" >GA16-18316S: Principles and mechanisms causing microorganism elimination by hydrodynamic cavitation</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
IOP Conference Series: Earth and Environmental Science
ISBN
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ISSN
1755-1315
e-ISSN
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Number of pages
8
Pages from-to
1-8
Publisher name
Neuveden
Place of publication
neuveden
Event location
Kyoto
Event date
Sep 17, 2018
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000560282600052