scholarly journals Experience in numerical simulation of turbulent wet-steam flow in the last stage of a high-power condensing turbine under conditions defined by full-scale experiments at a power plant

2017 ◽  
Author(s):  
Sergey Galaev ◽  
Vladimir Ris ◽  
L.L. Simoyu ◽  
Evgueni Smirnov
Keyword(s):  
Numerical Simulation ◽  
Power Plant ◽  
High Power ◽  
Full Scale ◽  
Steam Flow ◽  
Wet Steam ◽  
Last Stage ◽  
Wet Steam Flow

Some Experiments on Wet Steam Flow Visualization in Large Steam Turbine Blading

1976 ◽  
Vol 98 (3) ◽  
pp. 573-577 ◽  
Author(s):  
J. Krzyz˙anowski ◽  
B. Weigle
Keyword(s):  
Steam Turbine ◽  
Steam Flow ◽  
Light Sources ◽  
Phase Flow ◽  
Wet Steam ◽  
Experimental Conditions ◽  
Advantages And Disadvantages ◽  
Primary Droplet ◽  
Last Stage ◽  
Wet Steam Flow

In a series of experiments aimed at the visualization of the wet steam flow in the exhaust part of a 200 MW condensing steam turbine a set of periscopes and light sources was used. The aim of the experiment was: 1 – The investigation of the liquid-phase flow over the last stage stator blading of the turbine mentioned. 2 – The investigation of the gaseous-phase flow through the last stage blading at full and part load. The first part of the program partially failed due to the opaqueness of the wet steam atmosphere for the turbine load higher than 10–20 MW. The detailed experimental conditions will be described. An assessment of the primary droplet size will also be given. The preliminary results of the second part of the program will be outlined. The advantages and disadvantages of the equipment used will be discussed.

scholarly journals Numerical Simulation of Non-Equilibrium Two-Phase Wet Steam Flow through an Asymmetric Nozzle

Fluids ◽  
2017 ◽  
Vol 2 (4) ◽  
pp. 63
Author(s):  
Miah Alam ◽  
Manabu Takao ◽  
Toshiaki Setoguchi
Keyword(s):  
Numerical Simulation ◽  
Steam Flow ◽  
Wet Steam ◽  
Two Phase ◽  
Flow Through ◽  
Wet Steam Flow ◽  
Non Equilibrium

Features of liquid phase movement in the inter-blade channel of nozzle blade cascade

2017 ◽  
Vol 232 (5) ◽  
pp. 452-460 ◽  
Author(s):  
Vladimir Gribin ◽  
Ilya Gavrilov ◽  
Aleksandr Tishchenko ◽  
Victor Tishchenko ◽  
Vitaliy Popov ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Laser Diagnostics ◽  
Experimental Studies ◽  
Correlation Method ◽  
Leading Edge ◽  
Steam Flow ◽  
Wet Steam ◽  
Blade Cascade ◽  
Wet Steam Flow ◽  
Nozzle Blade

The experimental results of wet steam flow in the blade channel of flat nozzle blade cascade have been considered in the paper. The aim of this work is to study the motion of liquid droplets inside the inter-blade channel. Experimental studies were performed on installation circuit of wet steam. In order to obtain velocity fields of droplets in investigated channel, the laser diagnostics system was used. It carries out the cross-correlation method—particle tracking velocimetry. Numerical simulation of wet steam flow in studied channel was performed. According to the obtained data, the main features of the droplets motion in the blade channel have been revealed. Basic droplets streams and the sources of their appearance have been determined. The process of deposition and breakdown of the droplets on the surface of the blades have been studied. It is shown that reflected region of droplets (“fountain”) is formed around the leading edge. The experimental data were compared with the results of numerical simulation of the droplets motion in the flat nozzle blade cascade.

Development of a Wall Thinning Rate Model for Liquid Droplet Impingement Erosion

2012 ◽  
Author(s):  
Ryo Morita ◽  
Yuta Uchiyama
Keyword(s):  
Power Plant ◽  
High Speed ◽  
Liquid Droplet ◽  
Steam Flow ◽  
Wet Steam ◽  
Droplet Impingement ◽  
Wall Thinning ◽  
Wet Steam Flow ◽  
Thinning Rate ◽  
Droplet Impingement Erosion

Liquid droplet impingement erosion (LDI) is defined as an erosion phenomenon caused by high-speed droplet attack in a wet steam flow. Pipe wall thinning due to LDI is sometimes observed in a steam piping system of a power plant. In this study, for more realistic LDI evaluation in the power plant, we conducted LDI experiments in wet steam flow with steam apparatus, and tried to develop a new thinning rate prediction model (LDI model). High speed wet steam flow simulating the actual plant condition was employed in the experiments. As a result, the cushioning effect of liquid film on a material surface was observed and was incorporated into LDI model as a empirical equation with fluid parameter.

Wet steam flow and condensation loss in turbine blade cascades

2021 ◽  
Vol 189 ◽  
pp. 116748
Author(s):  
Chuang Wen ◽  
Yan Yang ◽  
Hongbing Ding ◽  
Chunqian Sun ◽  
Yuying Yan
Keyword(s):  
Turbine Blade ◽  
Steam Flow ◽  
Wet Steam ◽  
Wet Steam Flow

A fast response miniature probe for wet steam flow field measurements

2016 ◽  
Vol 27 (12) ◽  
pp. 125901
Author(s):  
Ilias Bosdas ◽  
Michel Mansour ◽  
Anestis I Kalfas ◽  
Reza S Abhari
Keyword(s):  
Flow Field ◽  
Field Measurements ◽  
Fast Response ◽  
Steam Flow ◽  
Wet Steam ◽  
Wet Steam Flow

A novel method for measuring the coarse water droplets in wet steam flow in steam turbines

2001 ◽  
Vol 10 (2) ◽  
pp. 123-126 ◽  
Author(s):  
Xiaoshu Cai ◽  
Lili Wang ◽  
Yongzhi Pan ◽  
Xin Ouyan ◽  
Jianqi Shen
Keyword(s):  
Steam Flow ◽  
Steam Turbines ◽  
Wet Steam ◽  
Water Droplets ◽  
Novel Method ◽  
Wet Steam Flow
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