TY  - Type of reference 
TI  - The efficiency of turbomachinery in the zero- and three-dimensional approaches 
AU  - Paweł Ziółkowski 
AU  - Tomasz Kowalczyk 
AU  - Janusz Badur 
AU  - Michel Feidt 
AB  - 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%. 
DO  - 10.21494/ISTE.OP.2021.0620 
JF  - Entropy: Thermodynamics – Energy – Environment – Economy  
KW  - efficiency,  entropy,  CFD,  zero-dimensional,  three-dimensional,  turbine stage,  isentropic,  polytrophic, efficiency,  entropy,  CFD,  zero-dimensional,  three-dimensional,  turbine stage,  isentropic,  polytrophic,  
L1  - https://openscience.fr/IMG/pdf/iste_entropie20v1n3_4.pdf 
LA  - en 
PB  - ISTE OpenScience 
DA  - 2021/03/4 
SN  - 2634-1476 
TT  - Deux méthodes de détermination de l’efficacité des turbomachines dans des approches 0D et 3D 
UR  - https://openscience.fr/The-efficiency-of-turbomachinery-in-the-zero-and-three-dimensional-approaches 
IS  - Issue 3 
VL  - 1 
ER  -