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.
|出版ステータス||Published - 2020|
|イベント||7th International Conference on Power Engineering, ICOPE 2019 - Kunming, China|
継続期間: 2019 10 21 → 2019 10 25
|Conference||7th International Conference on Power Engineering, ICOPE 2019|
|Period||19/10/21 → 19/10/25|
ASJC Scopus subject areas