Influence of the turbulence representation at the inlet on the downstream flow pattern in LES of backward-facing step
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F12%3APU95126" target="_blank" >RIV/00216305:26210/12:PU95126 - isvavai.cz</a>
Alternative codes found
RIV/00216305:26210/11:PU95126
Result on the web
<a href="http://www.epj-conferences.org/efm" target="_blank" >http://www.epj-conferences.org/efm</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1051/epjconf/20122501099" target="_blank" >10.1051/epjconf/20122501099</a>
Alternative languages
Result language
angličtina
Original language name
Influence of the turbulence representation at the inlet on the downstream flow pattern in LES of backward-facing step
Original language description
The impact of the choice of inlet boundary condition treatment on the fluid flow is studied in this work. The correct representation of the turbulence at the inlet to the domain is essential for the accuracy of Large Eddy Simulation. The inappropriate specification of the inlet velocity has significant effect on the downstream flow pattern. The case of backward-facing step was used as a test case. Three different approaches of the inlet boundary conditions were studied: uniform velocity profile, mean velocity profile of the fully developed channel flow and velocity obtained from mapping velocity from plane positioned behind the inlet back to the inlet. The results of the simulations were compared with experimental results. It has shown, that using uniform velocity profile on inlet and even prescribing turbulent mean velocity profile without proper representation of turbulence fluctuations leads to unrealistic results.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
JR - Other machinery industry
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA101%2F08%2F0096" target="_blank" >GA101/08/0096: Advanced Large Eddy Simulation modelling of particle-laden turbulent flow and shear-driven liquid wall film</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
EPJ Web of Conferences
ISBN
978-80-7372-784-0
ISSN
2100-014X
e-ISSN
—
Number of pages
5
Pages from-to
485-489
Publisher name
E D P SCIENCES
Place of publication
Neuveden
Event location
Jičín
Event date
Nov 22, 2011
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000304449600099