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On the Development of Short Axial Length Turbine Stator With Outlet Mach Number 2

[+] Author Affiliations
Martin Němec, Petr Straka, Tomáš Jelínek

Výzkumný a Zkušební Letecký Ústav, a.s., Praha, Czech Republic

Martin Babák

První Brněnská Strojírna Velká Bíteš, a.s., Velká Bíteš, Czech Republic

Paper No. GT2010-22490, pp. 1221-1230; 10 pages
  • ASME Turbo Expo 2010: Power for Land, Sea, and Air
  • Volume 7: Turbomachinery, Parts A, B, and C
  • Glasgow, UK, June 14–18, 2010
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-4402-1 | eISBN: 978-0-7918-3872-3
  • Copyright © 2010 by ASME


This contribution deals with development of a small-size axial steam turbine stator with nominal outlet Mach number equal to 2. Shortening of existing stator geometry was the main goal in order to improve rotor dynamic behaviors. The stator inlet angle appreciably differs in a real machine, therefore it was very important to ensure insensitivity to the inlet angle in a wide range of it. Technological simplicity was also followed to decrease production costs. Description of the new profile geometry development is introduced and results from numerical simulations done by turbine producer První Brněnská Strojírna (PBS) are summarized. Developed geometry of a linear cascade and also stator geometry was studied experimentally at the research institute Výzkumný a Zkušební Letecký Ústav (VZLU) in the next step. A comparison of the numerical and the experimental results is discussed in this paper and some remarks are mentioned.

Copyright © 2010 by ASME



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