Simulation of unsteady flows through three-stage middle pressure steam turbine in operation

Akihiro Uemura, Hironori Miyazawa, Takashi Furusawa, Satoru Yamamoto, Koichi Yonezawa, Shuichi Umezawa, Shuichi Ohmori

Research output: Contribution to conferencePaper

Abstract

The purpose of this study is to simulate unsteady steam flows through three-stage stator and rotor blade passages in a middle-pressure steam turbine operated in a power plant while considering manufactured and secular-changed blade shapes. The shapes of the manufactured and secular-changed blades are measured during overhaul. The numerical method is based on an in-house code developed by Tohoku University. The time-dependent pressure and the Mach number are visualized and the difference of the results obtained by assuming manufactured and secular-changed blades is explained. The simulated static temperatures assuming the blades shapes are then compared with each other and with the measured data. In addition, a simple method modifying the simulated static temperature considering real gas effect is proposed.

Original languageEnglish
Pages884-889
Number of pages6
Publication statusPublished - 2020 Jan 1
Event7th International Conference on Power Engineering, ICOPE 2019 - Kunming, China
Duration: 2019 Oct 212019 Oct 25

Conference

Conference7th International Conference on Power Engineering, ICOPE 2019
CountryChina
CityKunming
Period19/10/2119/10/25

Keywords

  • Heat balance
  • Middle Pressure
  • Numerical Simulation
  • Secular Change
  • Steam Turbine
  • Three Stages

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology

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  • Cite this

    Uemura, A., Miyazawa, H., Furusawa, T., Yamamoto, S., Yonezawa, K., Umezawa, S., & Ohmori, S. (2020). Simulation of unsteady flows through three-stage middle pressure steam turbine in operation. 884-889. Paper presented at 7th International Conference on Power Engineering, ICOPE 2019, Kunming, China.