Hybrid LES/RANS Simulations of Compressible Flow in a Linear Cascade of Flat Blade Profiles
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F24%3A00588571" target="_blank" >RIV/61388998:_____/24:00588571 - isvavai.cz</a>
Alternative codes found
RIV/46747885:24220/24:00012593
Result on the web
<a href="https://link.springer.com/journal/11630" target="_blank" >https://link.springer.com/journal/11630</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s11630-024-1995-z" target="_blank" >10.1007/s11630-024-1995-z</a>
Alternative languages
Result language
angličtina
Original language name
Hybrid LES/RANS Simulations of Compressible Flow in a Linear Cascade of Flat Blade Profiles
Original language description
The paper reports on 3D numerical simulations of unsteady compressible airflow in a blade cascade consisting of flat profiles using a hybrid LES/RANS approach including a transition model. As a first step towards simulation of blade flutter in turbomachinery, various incidence angle offsets of the middle blade were modeled. All simulations were run for the flow regime characterized by outlet isentropic Mach number Mis=0.5 and zero incidence. The results of the LES/RANS simulations (pressure and Mach number distributions) were compared to a baseline RANS model, and to experimental data measured in a high-speed wind tunnel. The numerical results show that both methods overpredict flow separation taking place at the leading edge. In this regard, the hybrid LES/RANS method does not provide superior results compared to the traditional RANS simulations. Nevertheless, the LES/RANS results also capture vortex shedding from the blunt trailing edge. The frequency of the trailing edge vortex shedding in CFD simulations matches perfectly the spectral peak recorded during wind tunnel measurements.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20302 - Applied mechanics
Result continuities
Project
<a href="/en/project/GA20-11537S" target="_blank" >GA20-11537S: Experimental research on flutter excitation function in turbomachinery</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Thermal Science
ISSN
1003-2169
e-ISSN
1993-033X
Volume of the periodical
33
Issue of the periodical within the volume
5
Country of publishing house
DE - GERMANY
Number of pages
12
Pages from-to
1839-1850
UT code for WoS article
001260400800001
EID of the result in the Scopus database
2-s2.0-85197255872