.... In Part II, five cases of geometry with different axial distances between the swirl breaker and the rotor shroud, which covered a range for the stage axial distance of actual high and intermediate pressure (HIP) steam turbines, were investigated using a single-rotor computational fluid dynamics (CFD...

...Takanori Shibata; Hisataka Fukushima; Kiyoshi Segewa In high and intermediate pressure (HIP) steam turbines with shrouded blades, it is well known that shroud leakage losses contribute significantly to overall losses. Shroud leakage flow with a large tangential velocity creates a significant...

..., the advantages, and the information obtained from an advanced exergoeconomic analysis by applying it to a complex plant, i.e., to a combined cycle power plant. The largest parts of the unavoidable cost rates are calculated for the components constituting the gas turbine system and the low-pressure steam turbine...

...James Spelling; Markus Jöcker; Andrew Martin Steam turbines in solar thermal power plants experience a much greater number of starts than those operating in baseload plants. In order to preserve the lifetime of the turbine while still allowing fast starts, it is of great interest to find ways...

...Mario Álvarez Fernández; Cristina Alonso-Tristán A model is described that studies the behavior of a steam turbine on the basis of the law of conservation of energy even under wet-steam conditions at particular points in time. Initially, the hypothesis that steam expansion follows a polytropic...

...Shigeki Senoo; Kiyoshi Segawa; Hisashi Hamatake; Takeshi Kudo; Tateki Nakamura; Naoaki Shibashita A computational technique for multistage steam turbines, which can allow for thermodynamic properties of steam, is presented. Conventional three-dimensional multistage calculations for unsteady flows...

... conditions using high ash (HA) indigenous coal. A unit size of 800 MWe presently under development in India is considered for energy and exergy analysis of power plants. Commercially established steam turbine parameters are used for the optimization of SupC power plant, whereas advanced steam turbine...

... Procedures for Mistuning Identification and Travelling Wave Excitation of Blisks ,” ASME Paper No. GT2009-59671. 11 05 2010 03 06 2010 11 11 2010 11 11 2010 blades discs (structures) electromagnets frequency response friction numerical analysis steam turbines...

... 2010 26 10 2010 blades couplings nuclear power stations rotors shafts steam turbines turbines vibrations In rotor systems having a long-axis blade such as a turbine, 0 and 1 nodal diameter ( k = 0 and k = 1 ) modes are well known with respect to blade-shaft...

... and discussed. couplings shafts steam turbines turbomachinery vibrations The presence of geared transmissions in the shaft-train of rotating machines can significantly affect the harmonic pattern of the shaft vibrations. Moreover, depending on the mechanical properties of the machine-train ( 1 2...

...Andrea Tonoli; Nicola Amati; Angelo Bonfitto; Mario Silvagni; Bernard Staples; Evgueni Karpenko The vibration control of rotors for gas or steam turbines is usually performed using passive dampers when hydrodynamic bearings are not used. In layouts where the rotating parts are supported by rolling...

...Jun Manabe; Jiro Kasahara; Issaku Fujita; Toshiki Kojima The moisture separator reheater (MSR) is a key piece of equipment in reheat systems in nuclear steam turbines that use saturated main steam, where it helps improve turbine efficiency and suppress flow-accelerated corrosion. Fundamental...

... analysis Galerkin method iterative methods mechanical contact reduced order systems steam turbines thermal stresses time-domain analysis vibrations The rotor blades of a low pressure (LP) steam turbine stage are subjected to high static and dynamic loads during operation. The static loads...

...Daren Yu; Yanfeng Duan; Jinfu Liu; Zhansheng Liu; Qinghua Hu It is noticed in a few steam turbines that there are a pad temperature rise of more than 10 ° C and a radial journal movement of more than 50 μ m in the bearings adjacent to control stage when they operate under partial arc admission...

...Jacob Laborenz; Christian Siewert; Lars Panning; Jörg Wallaschek; Christoph Gerber; Pierre-Alain Masserey In gas and steam turbine applications a common approach to prevent the blades from high cycle fatigue failures due to high vibration amplitudes is the usage of friction damping elements...

... steam turbines Energy-producing steam and gas turbine components operate in a severe environment at elevated temperatures. For protection against environmental degradation, both M Cr and M CrAl (where M = Fe , Ni , Co , or combination of these elements) are widely...

... for protecting steam turbine blades from solid particle erosion due to higher erosion resistance. However, blades cannot be protected effectively when coating is thinner than a critical value θ crit . Based on our results, it is recommended that the protective coating for the steam turbine blade should...

...Shimin Deng; Rory Hynes In this paper, pressurized oxy-fuel combustion power generation processes are modeled and analyzed based on a 350 MW subcritical reheat boiler associated with a condensing steam turbine. The performance results are obtained. Furthermore, the influences of slurry...

..., and steam-turbine calculations; if even higher consistency is required, the equations may be used to generate guesses for iterative procedures. In order to avoid such iteration, this paper provides backward equations v 3 ( p , T ) for region 3 as shown in Fig. 1 . With the specific...

... are demonstrated by its application to a single-shaft combined cycle with both gas turbine and steam turbine driving a common generator. In the absence of a reliable and accurate measuring system to individually determine gas and steam turbine shaft outputs, data reconciliation is vital to an accurate analysis...