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Flutter methodology using reduced order aeroelastic model
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SYSNO ASEP 0549611 Druh ASEP V - Výzkumná zpráva Zařazení RIV O - Ostatní Název Flutter methodology using reduced order aeroelastic model Tvůrce(i) Prasad, Chandra Shekhar (UT-L) ORCID
Pešek, Luděk (UT-L) RID
Šnábl, Pavel (UT-L) ORCIDCelkový počet autorů 3 Vyd. údaje Praha: Ústav termomechaniky AV ČR, v. v. i., 2021 Poč.str. 24 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova reduced order model (ROM) ; classical flutter ; steam turbine blade ; panel method Vědní obor RIV BI - Akustika a kmity Obor OECD Applied mechanics CEP TN01000007 GA TA ČR - Technologická agentura ČR Institucionální podpora UT-L - RVO:61388998 Anotace The present research project is focused on development of fast and efficient numerical method based on reduced order aeroelastic method (ROAM) for modeling and analysis of
classical flutter in the low pressure (LP) stage steam turbine blade. Stability diagram such as aerodynamic damping (AD) of aeroelasticity of cascade of 3D turbine blades used as a prime
characterization factor. In the calculation of the S-curve/AD, the problem of classical flutter formation associated with running waves is considered here. Running waves is simulated by
the inter-blade phase shift of the blades in the cascade. Panel method based boundary element flow solver is employed for calculation of unsteady aerodynamic forces. This method is good
compromise of speed and accuracy for the estimation of the stability of the blades on a classical flutter. One way loose coupling technique between PM based flow solver and the structural
model. For the structural part modal model synthesis (MMS) method is adopted in the ROAM solver. MMS is adopted to further reduced the computational cost. The ROAM simulated AD
and pressure distribution over blade is compared high fidelity CFD data on real blade geometry provided by Doosan Skoda Power s.r.o. Furthermore, the ROAM results are also compared
with experimentally obtained results on two different linear cascade. The ROAM model shows good agreement with linear cascade results, however, there is noticeable discrepancy with real blade CFD results.Pracoviště Ústav termomechaniky Kontakt Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Rok sběru 2022
Počet záznamů: 1