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Wet steam flow and condensation loss in turbine blade cascades

Applied Thermal Engineering, 2021
This study develops a wet steam modelling to solve the phase change process inside the blade cascade of a steam turbine. The comparative study is carried out to understand the impact of the dry gas model and wet steam model on predicting the flow ...
Chuang Wen, Yan Yang, Hongbing Ding
exaly   +3 more sources

Effect of mixing on the performance of wet steam ejectors

Energy, 2015
Steam ejector computational simulations using a wet steam model give higher entrainment ratios and higher critical back pressures for the ejector compared with the ideal gas model. This paper identifies the origin of these differences. Simulation results
Kavous Ariafar, David Buttsworth
exaly   +2 more sources

Analysis and design of wet-steam stages

, 2017
In most conventional power plants the turbines are supplied with superheated steam but, during the course of its expansion, the condition of the steam enters the two-phase region and the last few low-pressure (LP) stages operate in the wet steam regime ...
S. Senoo, A.J. White
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Instrumentation for wet steam

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2004
This paper is devoted to the measuring methods and instrumentation used in the wet-steam area for both aerodynamics measurements (pressure, temperature and velocity) taking into account the interaction between the vapour and the liquid phase, and the characterization of the liquid phase itself (dispersed phase and liquid film).
A Kleitz, J M Dorey
openaire   +1 more source

Results of the International Wet Steam Modeling Project

Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 2018
The purpose of the “International Wet Steam Modeling Project” is to review the ability of computational methods to predict condensing steam flows. The results of numerous wet-steam methods are compared with each other and with experimental data for ...
Fiona R Hughes, Sebastian Schuster, Alexander J White   +2 more
exaly   +3 more sources

Effects of Wetness in Steam Turbines

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2005
Courses in mechanical engineering usually introduce the theory of axial-flow turbo-machines in terms of simple velocity triangles representing the bulk flow of ideal compressible fluid through the blade passages. A distinctive practical difference, peculiar to steam turbines (ST), is the presence of liquid-water in the flow field. The
J A Hesketh, P J Walker
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Calibration characteristics of a three-hole probe and a static tube in wet steam

International Journal of Heat and Fluid Flow, 2001
Total pressure tubes, yawmeters and static probes can be used for measurements in droplet laden flows, e.g., mists and wet steam. But to be successful it is important when calibrating the instruments that the characteristics of the droplets be ...
F Bakhtar
exaly   +2 more sources

Wet-steam erosion of steam turbine disks and shafts

Power Technology and Engineering, 2011
A study of wet-steam erosion of the disks and the rotor bosses or housings of turbines in thermal and nuclear power plants shows that the rate of wear does not depend on the diagrammed degree of moisture, but is determined by moisture condensing on the surfaces of the diaphragms and steam inlet components.
N. V. Averkina, I. V. Zheleznyak, Yu. Ya. Kachuriner, I. A. Nosovitskii, V. G. Orlik, V. I. Shishkin   +5 more
openaire   +1 more source

An investigation of electrostatic phenomena associated with flowing wet steam with particular reference to the wet steam turbine

International Journal of Heat and Fluid Flow, 1980
Abstract A wet steam tunnel was constructed to simulate the ineteraction of liquid and vapour in order to investigate the nature and origin of static electrification phenomena which occur within wet steam turbines. The tunnel was operated at 0·17 bar pressure with steam velocity up to 290 m/s.
D.J. Ryley, F.P. Loftus
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Influence of Wet Steam on the Five-Stage Steam Turbine Efficiency

Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines, 2018
In the paper the behaviour of the five-stage experimental steam turbine 10 MW is described during the expansion transition from superheated steam to wet steam as well as the influence of wet steam on the flow path efficiency. The influence of wet steam occurrence on one to four last stages is given by setting the inlet steam parameters.
Michal Hoznedl, Michal Kolovratník, Ladislav Tajč, Andreas P. Weiß, Lukáš Mrózek   +4 more
openaire   +1 more source