Počet záznamů: 1
Optimization of Root Section for Ultra Long Steam Turbine Rotor Blade
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SYSNO ASEP 0474908 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV Záznam nebyl označen do RIV Název Optimization of Root Section for Ultra Long Steam Turbine Rotor Blade Tvůrce(i) Hála, Jindřich (UT-L) RID, ORCID
Luxa, Martin (UT-L) RID, ORCID
Šimurda, David (UT-L) RID, ORCID
Bobčík, M. (CZ)
Novák, O. (CZ)
Rudas, B. (CZ)
Synáč, J. (CZ)Číslo článku ISAIF13-S-0049 Zdroj.dok. Proceedings of the 13th International Symposium on Experimental Computational Aerothermodynamics of Internal Flows. -, 2017 Poč.str. 9 s. Forma vydání Nosič - C Akce International Symposium on Experimental Computational Aerothermodynamics of Internal Flows /13./ Datum konání 07.05.2017 - 11.05.2017 Místo konání Okinawa Země JP - Japonsko Typ akce WRD Jazyk dok. eng - angličtina Země vyd. JP - Japonsko Klíč. slova steam turbine ; blade cascade ; root section Vědní obor RIV BK - Mechanika tekutin CEP TA03020277 GA TA ČR - Technologická agentura ČR TH02020057 GA TA ČR - Technologická agentura ČR Institucionální podpora UT-L - RVO:61388998 Anotace This study presents the comparison of aerodynamic performances of two successive designs of the root profiles for the ultra long rotor blade equipped with a straight fir-tree dovetail. Since aerodynamic and strength requirements laid upon the root section design are contradictory, it is necessary to aerodynamically optimize the design within the limits given by the foremost strength requirements. The most limiting criterion of the static strength is the size of the blade cross-section, which is determined by the number of blades in a rotor and also by the shape and size of a blade dovetail. The aerodynamic design requires mainly the zero incidence angle at the inlet of a profile and in the ideal case ensures that the load does not exceed a limit load condition. Moreover, the typical root profile cascades
are transonic with supersonic exit Mach number, therefore, the shape of a suction side and a trailing edge has to respect the transonic expansion of a working gas. In this paper, the two variants of root section profile cascades are compared and the aerodynamic qualities of both variants are verified using CFD simulation and two mutually independent experimental methods of mesuarements (optical and pneumatic).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 2018
Počet záznamů: 1