Počet záznamů: 1
Problematics of aerodynamic damping calculation from measured data of 5-blade cascade
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SYSNO ASEP 0564701 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV Záznam nebyl označen do RIV Název Problematics of aerodynamic damping calculation from measured data of 5-blade cascade Tvůrce(i) Šnábl, Pavel (UT-L) ORCID
Pešek, Luděk (UT-L) RID
Prasad, Chandra Shekhar (UT-L) ORCID
Chindada, Sony (UT-L)Celkový počet autorů 2 Vyd. údaje Plzeň: Západočeská Univerzita, 2022 Zdroj.dok. COMPUTATIONAL MECHANICS 2022. - Plzeň : University of West Bohemia Plzeň, 2022 / Adámek V. ; Jonášová A. ; Plánička S. ; Zajíček M. - ISBN 978-80-261-1116-0 Rozsah stran s. 145-146 Poč.str. 2. Forma vydání Online - E Akce Conference on COMPUTATIONAL MECHANICS 2022 (CM 2022) /37./ Datum konání 07.11.2022 - 09.11.2022 Místo konání Srní Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova aerodynamic damping ; S-curve ; blade cascade Vědní obor RIV BI - Akustika a kmity Obor OECD Applied mechanics CEP GA20-26779S GA ČR - Grantová agentura ČR Institucionální podpora UT-L - RVO:61388998 Anotace Aerodynamic damping as a function of inter-blade phase angle (IBPA), so called S-curve, is crucial for assessment of aeroelastic stability of blade cascades, e.g. turbines, compressors, etc.
For constructing the S-curve, the motion-induced controlled flutter is introduced to the bladesof the cascade. As decribed in [1], two testing methods exist: aerodynamic influence coefficient
(AIC) approach and travelling wave mode (TWM) approach. In TWM approach, all blades in a row oscillate with the same frequency and amplitude with various IBPAs. The response is
measured only on the reference blade. With this approach, several measurements with different IPBAs are needed to construct the S-curve. On the other hand, AIC uses single oscillating
blade and principle of linear superimposition of aerodynamic influence responses measured on all blades in a cascade. The result of one single measurement can be used for estimation of
aerodynamic damping for any IBPA. In the past year a new 5-blade cascade with rotating symmetrical NACA 0010 profiles was designed and built. The blades of the cascade were placed further apart and thus we are now able to reach stall flutter. Also, the suspension of the blades and sensors were significantly improved. Now, our goal is to evaluate S-curves using AIC approach for different flow conditions and oscillation frequencies.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 2023 Elektronická adresa https://www.kme.zcu.cz/compmech/download/proceedings/CM2022_Conference_Proceedings.pdf#section*.45
Počet záznamů: 1