CFD Calculations in Turbomachinery and their Validation

0447923 - ÚT 2016 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Váchová, J. - Louda, P. - Příhoda, Jaromír - Luxa, Martin - Šimurda, David
CFD Calculations in Turbomachinery and their Validation.
Turbostroje 2015. Praha: TechSoft Engineering s.r.o, 2015, s. 156-165. ISBN 978-80-905040-5-9.
[Turbostroje 2015. Praha (CZ), 22.09.2015-24.09.2015]
Grant CEP: GA TA ČR(CZ) TA03020277; GA ČR GAP101/12/1271
Institucionální podpora: RVO:61388998
Klíčová slova: CFD * validation * transition model * blade cascade * steamm turbine
Kód oboru RIV: BK - Mechanika tekutin

Numerical data obtained by 2D compressible flow CFD simulation were validated by the comparison with experimental results. The investigation was made on the mid-section of the 48" long rotor blade and it was focused on the effect of shock-wave interactions with shear layers. This interaction results in the laminar/turbulent transition where separated flow occurs and it has impacts on flow structure and the blade cascade losses. Numerical simulations were carried out by two different codes: the commercial code NUMECA based on the gamma-Re transition model connected with the SST k-epsilon/k-omega turbulence model and in-house code of the Dept. of Technical mathematics, CTU Prague/ Institute of Thermodynamics in Prague. Simulations of the laminar and the fully turbulent flows were accomplished for comparison using the same numerical approach.
Trvalý link: http://hdl.handle.net/11104/0254453