Characteristics of non-stationary thermal stresses in the disc of the last turbine stage

Guzović, Zvonimir and Sviderek, Stanislav and Mihalić, Tihomir (2010) Characteristics of non-stationary thermal stresses in the disc of the last turbine stage. = Characteristics of non-stationary thermal stresses in the disc of the last turbine stage. In: 14th International Research/Expert Conference Trends in the Development of Machinery and Associated Technology - TMT 2010, 11-18.09.2010., Mediterranean Cruise, Mediterranean.

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Abstract

In the paper “Modelling of Non-stationary Thermal Stresses in Steam Turbine Rotors” 1 presented on TMT 2004, the algorithm and the results of non-stationary thermal stresses modelling in steam turbine rotor by means of the users software package are shown. Non-stationary thermal stresses are stipulated by pressure change on turbine exit. The results of non-stationary thermal stresses calculations (i.e. of modelling) show on several characteristic regions of the rotor thermal stressed state: a) the rotor central bore ; b) the low-pressure rotor ; c) the disc of the last turbine stage, and d) the rear-end labyrinth gland. Due to in the paper “Characteristics of Non-Stationary Thermal Stresses in Steam Turbine Rotors” 2 presented on TMT 2006, these characteristic regions are additionally analysed. As in the disc of the last turbine stage the high gradients of thermal and mechanical quantities (temperature, heat flux, deformation, stress) are determined, so this region of rotor is analysed in detail. In this paper the results of this analyse are presented.

Item Type: Conference or Workshop Item (Paper)
Keywords (Croatian): steam turbine disc; non-stationary thermal stresses; numerical modelling
Subjects: TECHNICAL SCIENCE > Mechanical Engineering
Divisions: 500 Department of Energy, Power Engineering and Environment > 520 Chair of Fluid Mechanics
500 Department of Energy, Power Engineering and Environment > 530 Chair of Turbomachinery
Indexed in Web of Science: No
Indexed in Current Contents: No
Date Deposited: 08 Jul 2015 11:17
Last Modified: 25 Mar 2016 08:08
URI: http://repozitorij.fsb.hr/id/eprint/4506

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