Publication detail

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.

English title

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

Type

WoS Article

Language

en

Original abstract

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.

Keywords in English

Steam turbineDiffuserDeflectorCFD modelingPressure loss

Released

2025-06-09

Publisher

Elsevier

Location

Holandsko

ISSN

2214-157X

Journal

Case Studies in Thermal Engineering

Volume

73

Number

September

Pages from–to

1–10

Pages count

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",
  journal="Case Studies in Thermal Engineering",
  year="2025",
  volume="73",
  number="September",
  pages="1--10",
  doi="10.1016/j.csite.2025.106490",
  url="https://www.sciencedirect.com/science/article/pii/S2214157X25007506"
}