Numerical investigation of Dean vortex evolution in turbulent flow through 90° pipe bends

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27230%2F25%3A10257428" target="_blank" >RIV/61989100:27230/25:10257428 - isvavai.cz</a>

Result on the web

<a href="https://www.webofscience.com/wos/woscc/full-record/WOS:001446413000001" target="_blank" >https://www.webofscience.com/wos/woscc/full-record/WOS:001446413000001</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3389/fmech.2025.1405148" target="_blank" >10.3389/fmech.2025.1405148</a>

Result language

angličtina

Original language name

Numerical investigation of Dean vortex evolution in turbulent flow through 90° pipe bends

Original language description

The current study focuses on numerically simulating turbulent flow in a 90 degrees pipe bend using the k-epsilon turbulence model. Following validation of present numerical approach against prior experimental findings, extensive research was conducted to elucidate the development of Dean vortices and the secondary flow within the pipe bend. This study illustrated the distribution of mean axial velocity, secondary flow phenomena, and the occurrence of Dean vortices in various sections. Velocity vector distributions vividly depict the secondary motion induced by fluid transitioning from the inner to the outer wall of the bend, leading to flow separation. The interplay between the centrifugal force from the bend and adverse pressure gradient results in the formation of two counter-rotating vortices in the streamwise direction. This study presents numerical results aimed at providing insights into the behaviour of Dean vortices and the formation of secondary flow in a 90 degrees pipe bend.

Czech name

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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

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OECD FORD branch

20301 - Mechanical engineering

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2025

Confidentiality

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

Name of the periodical

Frontiers in Mechanical Engineering - Switzerland

ISSN

2297-3079

e-ISSN

2297-3079

Volume of the periodical

11

Issue of the periodical within the volume

MAR 4 2025

Country of publishing house

CH - SWITZERLAND

Number of pages

9

Pages from-to

nestránkováno

UT code for WoS article

001446413000001

EID of the result in the Scopus database

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