Detail publikace

Effect of asymmetric diffuser deflector on even distribution of steam leaving blade section of steam turbine: comparative computational study

BOBČÍK, M. POSPÍŠIL, J. FIEDLER, J.

Anglický název

Effect of asymmetric diffuser deflector on even distribution of steam leaving blade section of steam turbine: comparative computational study

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

en

Originální abstrakt

This study presents a computational analysis comparing two designs of steam turbine diffuser deflectors: a conventional axisymmetric design and an innovative asymmetric design. The computational comparison is carried out for a real turbine with a power output of 1.090 MW. Utilizing ANSYS CFX simulations based on the finite volume method, the innovative deflector demonstrates extending the steam expansion, which is directly related to the up to 5 % increase in the output power of the turbine last stage blades. The asymmetric steam turbine diffuser deflector geometry promotes a more uniform static pressure distribution and reduces flow separation and recirculation zones, leading to decreased pressure losses between the turbine's inner and outer casings.

Anglický abstrakt

This study presents a computational analysis comparing two designs of steam turbine diffuser deflectors: a conventional axisymmetric design and an innovative asymmetric design. The computational comparison is carried out for a real turbine with a power output of 1.090 MW. Utilizing ANSYS CFX simulations based on the finite volume method, the innovative deflector demonstrates extending the steam expansion, which is directly related to the up to 5 % increase in the output power of the turbine last stage blades. The asymmetric steam turbine diffuser deflector geometry promotes a more uniform static pressure distribution and reduces flow separation and recirculation zones, leading to decreased pressure losses between the turbine's inner and outer casings.

Klíčová slova anglicky

Steam turbineDiffuserDeflectorCFD modelingPressure loss

Vydáno

09.06.2025

Nakladatel

Elsevier

Místo

Holandsko

ISSN

2214-157X

Ročník

73

Číslo

September

Strany od–do

1–10

Počet stran

10

BIBTEX


@article{BUT198159,
  author="Marek {Bobčík} and Jiří {Pospíšil} and Jan {Fiedler},
  title="Effect of asymmetric diffuser deflector on even distribution of steam leaving blade section of steam turbine: comparative computational study",
  year="2025",
  volume="73",
  number="September",
  month="June",
  pages="1--10",
  publisher="Elsevier",
  address="Holandsko",
  issn="2214-157X"
}