Search
Abstract
Efficiency of turbomachinery is usually defined using an isentropic process. This approach provides a reliable reference point only when pressure and temperature measurements are available, e.g. at the casing inlet and outlet. In the case of a single stage internal efficiency determination the reference point is difficult. Computational fluid dynamics allows for an exact calculation of values of losses occurring in a turbine stage from turbine blades geometry, clearances, uneven steam distribution and other. Present method is a three-dimensional polytrophic approach based on work comparison of a turbine stage using real and ideal working fluid. The reference state is estimated by iterative simulation of considered geometry using the Eulerian model of compressible fluid. This approach is more convenient and feels natural when using 3D modeling. Moreover, calculations conducted for a control stage indicated differences between results attained using those two approaches less than 0.2%.
Citations
-
1
CrossRef
-
0
Web of Science
-
0
Scopus
Authors (4)
-
Tomasz Kowalczyk
- Instytut Maszyn Przepływowych PAN
-
Janusz Badur prof.
- Instytut Maszyn Przepływowych PAN
-
Michel Feidt
- University of Lorraine, Laboratory of Energetics & Theoretical & Applied Mechanics
Cite as
Full text
full text is not available in portal
Keywords
Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
Entropie
no. 20-1,
pages 1 - 11,
ISSN: - Language:
- English
- Publication year:
- 2021
- Bibliographic description:
- Ziółkowski P., Kowalczyk T., Badur J., Feidt M.: The efficiency of turbomachinery in the zero-and three-dimensional approaches// Entropie -Vol. 20-1,iss. 3 (2021), s.1-11
- DOI:
- Digital Object Identifier (open in new tab) 10.21494/iste.op.2021.0620
- Verified by:
- Gdańsk University of Technology
seen 111 times
Recommended for you
OPTIMIZATION OF THE LAST STAGE OF GAS-STEAM TURBINE USING A HYBRID METHOD
- P. Ziółkowski,
- Ł. Witanowski,
- P. Klonowicz
- + 1 authors
On the internal efficiency of a turbine stage: classical and CFD definitions
- L. Nastałek,
- M. Karcz,
- D. Sławiński
- + 6 authors
On design and analysis of flow characteristics of the last stage of gas-steam turbine
- S. Głuch,
- P. Ziółkowski,
- Ł. Witanowski
- + 3 authors