A CFD Analysis of Steam Flow in the Two-Stage Experimental Impulse Turbine with the Drum Rotor Arrangement
1 CTU, Department of Mechanical Engineering, 16607 Technická 4 Praha 6, Czech Republic
2 WBU, Department of Mechanical Engineering, 30614 Univerzitní 22 Plzeň, Czech Republic
a Kukchol Yun: firstname.lastname@example.org
Published online: 28 March 2016
The aim of the paper is to present the CFD analysis of the steam flow in the two-stage turbine with a drum rotor and balancing slots. The balancing slot is a part of every rotor blade and it can be used in the same way as balancing holes on the classical rotor disc. The main attention is focused on the explanation of the experimental knowledge about the impact of the slot covering and uncovering on the efficiency of the individual stages and the entire turbine. The pressure and temperature fields and the mass steam flows through the shaft seals, slots and blade cascades are calculated. The impact of the balancing slots covering or uncovering on the reaction and velocity conditions in the stages is evaluated according to the pressure and temperature fields. We have also concentrated on the analysis of the seal steam flow through the balancing slots. The optimized design of the balancing slots has been suggested.
© Owned by the authors, published by EDP Sciences, 2016
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