An Analysis of the Bi-modal Size Distribution of the Coarse Droplets in a Steam Turbine

Bartoš, Ondřej; Huněk, Adam; Pavlíček, Petr

doi:10.1051/matecconf/202236700003

Cited by 2 publications

(2 citation statements)

References 6 publications

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“…Measurements in the tunnel showed bi-modal distribution of the coarse droplets and the corresponding Weber numbers were higher, than the critical Weber number from the theory [3]. Among published papers, this difference was measured also in similar wind tunnel [4,5] came with possible explanation. The aim of this paper is to analyse mentioned explanation and to help with understanding of this phenomena.…”

Section: Introductionmentioning

confidence: 78%

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A Study of the coarse droplet formation from the liquid film in steam turbines

Bartoš,

Huněk,

Antoš

2023

MATEC Web Conf.

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For all the deployment of the non-fossil energy sources the steam turbine remains the most important energy transforming device. In the current situation when the daily operation of the turbines is not predictable due to electricity supply from the photovoltaic and the wind power plants, the turbines work in the non-design conditions, the danger of the blade’s erosion caused by the coarse droplets is assumed. The purpose of this paper is to suggest the possible formation process of the coarse droplets in the steam turbine. The current studies were focused mostly on the measurement or identification of the coarse droplets in the steam turbine, but the explanation of the archived results was not sufficient. An analysis of the droplets formed in the wind tunnel indicates, for the majority of the measurements, the part of the formed droplets is bigger than the critical Weber number limit. Similar, but less detail, experience was achieved for measurement in the steam turbine. This paper introduces simple analysis of the optically measured coarse droplets size distribution with the modelled flow field behind the blade fitted by measured velocity field. A detailed hot wire measurement was performed in the vicinity of the trailing edge where the liquid film is disrupted to the coarse droplets.

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Section: Introductionmentioning

confidence: 78%

“…al. [4] suggested possible explanation of the existence of the bi-modal distribution due to the influence of wake behind the trailing edge of the blade. Bartoš et.…”

Section: Hot Wire Measurementmentioning

confidence: 99%

A Study of the coarse droplet formation from the liquid film in steam turbines

Bartoš,

Huněk,

Antoš

2023

MATEC Web Conf.

Self Cite

View full text Add to dashboard Cite

show abstract

A study of the coarse droplet formation from the liquid film in steam turbines

Bartoš,

Huněk,

Antoš

2024

EPJ Web of Conf.

View full text Add to dashboard Cite

The steam turbines are still the essential machines for the energy transformation. For all the deployment of the non-fossil energy sources the steam turbine remains the most important energy transforming device. In the current situation when the daily operation of the turbines is not predictable due to electricity supply from the photovoltaic and the wind power plants, the turbines work in the non-design conditions, the danger of the blade’s erosion caused by the coarse droplets is assumed. The purpose of this paper is to suggest the possible formation process of the coarse droplets in the steam turbine. The current studies were focused mostly on the measurement or identification of the coarse droplets in the steam turbine but the explanation of the archived results was not sufficient. The influence of the flow field behind the blade on the liquid film atomization was studied. The first measurements of the detailed characteristic of the flow field in the wind tunnel for the qualitative analysis of the phenomena were performed with promising results.

show abstract

An Analysis of the Bi-modal Size Distribution of the Coarse Droplets in a Steam Turbine

Cited by 2 publications

References 6 publications

A Study of the coarse droplet formation from the liquid film in steam turbines

A Study of the coarse droplet formation from the liquid film in steam turbines

A study of the coarse droplet formation from the liquid film in steam turbines

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