Modelling 3D Steam Turbine Flow Using Thermodynamic Properties of Steam Iapws-95

Rusanow, A.V.; Lampart, Piotr; Pashchenko, N. V.; Rusanov, Andrey

doi:10.1515/pomr-2016-0009

Cited by 14 publications

(11 citation statements)

References 5 publications

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“…The feature of positiveness of the constructed function in internal points of the object is very convenient for realization of 3D printing. Having equation of an object, one can easily obtain equation of its any cross section which is useful in numerical calculations using CFD-methods (e. g. [19]), namely, when constructing computational meshes.…”

Section: Discussion Of Results Obtained In the Analytical Identificatmentioning

confidence: 99%

Analytical identification of the unmanned aerial vehicles' surfaces for the implementation at a 3D printer

Sheiko

Maksimenko-Sheyko

Sirenko

et al. 2019

EEJET

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Section: Discussion Of Results Obtained In the Analytical Identificatmentioning

confidence: 99%

Analytical identification of the unmanned aerial vehicles' surfaces for the implementation at a 3D printer

Sheiko

Maksimenko-Sheyko

Sirenko

et al. 2019

EEJET

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“…These parameters include roughness n (rank 2) and water surface slope i (rank 3). Therefore, we should strengthen the study of water level-discharge relation parameters and improve the quality of early warning and forecasting of flash flood (Rusanow et al 2016, Pina-Garcia et al 2016, Kim et al 2018.…”

Section: Quantitative Analysis Resultsmentioning

confidence: 99%

A Morris-Sobol Two-Layer Progressive Model for Sensitivity Analysis of Parameters in Rainfall Threshold Calculation of Flash Flood

Yuan

Gao

Wan

et al. 2019

Rev. Int. Contam. Ambie.

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As one of the most hazardous natural events, flash flood is frequently responsible for loss of life and severe damage to infrastructure and public health. The Rainfall Threshold (RT) is the main warning index of flash flood that is used in China. However, the amount of parameters in RT calculation is significantly large, and the determination of some parameter values is affected by subjective factors substantially. In this paper, a Morris-Sobol Two-layer Progressive Model (M-STPM) is established to identify sensitive parameters in RT calculation. Firstly, the Morris screening method is applied to qualitatively analyse the sensitivity of parameters, while the insensitive parameters are filtered. Then the Sobol method is employed to quantify the sensitivity. The sensitivity of parameters in RT calculation is determined through a case study in Duli Village of Anyang County in Henan Province. The results indicate that mean of 1-h annual maximum point rainfall is the most influential parameter. It is found that the parameters in water level-discharge relation calculation have a large influence on the RT, which shows that the proposed model can provide a reference for determining the value of parameters and can lay a theoretical foundation for further error analysis in RT calculation. Palabras clave: inundación repentina, umbral de precipitación, parámetro de sensibilidad, modelo progresivo Morris-Sobol de dos capas, método inverso del nivel de descarga de agua RESUMEN Las inundaciones repentinas, uno de los eventos naturales más peligrosos, son con frecuencia responsables de la pérdida de vidas humanas y de daños a la infraestructura y a la salud pública. El umbral de precipitación (RT, por sus siglas en inglés) es el principal índice de alerta que se utiliza en China. Sin embargo, la cantidad de parámetros para el cálculo del RT es muy grande y la determinación de los valores de algunos de

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“…To reduce computational cost, an interpolation-analytical method of representation of thermodynamic functions is used. This method was first applied to take into account the thermodynamic properties of water and steam in 3D calculations based on the IAPWS-95 equation of state in [29]. According to this approach, the required thermodynamic functions are determined from the following dependencies:…”

Section: Methods Of Interpolation-analytical Representation Of Thermodynamic Functionsmentioning

confidence: 99%

Development and Experimental Validation of Real Fluid Models for CFD Calculation of ORC and Steam Turbine Flows

et al. 2021

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The article describes an interpolation–analytical method of reconstruction of the IAPWS-95 equations of state and the modified Benedict–Webb–Rubin equations of state with 32 terms (mBWR32). The method enables us to provide the thermodynamic closure in 3D computational fluid dynamics (CFD) calculations of turbomachinery flows with real working media, such as steam and Organic Rankine Cycle (ORC) fluids. The described approach allows for the sufficient accuracy of 3D flow calculations and does not require a significant increase in computational cost over perfect gas calculations. The method is validated against experimental data from measurements and compared with computational results from the model using the Tammann equation of state. Three turbine blading systems are considered—a multi-stage configuration from a low-pressure cylinder of a large-power steam turbine and two ORC microturbines working with organic media HFE7100 and R227ea. The calculation results obtained using the described method of approximation of the IAPWS-95 and mBWR32 equations exhibit satisfactory agreement with the experimental data, considering pressures, temperatures and enthalpies in key sections, as well as turbine power and efficiency in a wide range of changing thermodynamic parameters. In contrast, the Tammann equation of state provides acceptable results only for relatively small changes of thermodynamic parameters.

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Modelling 3D Steam Turbine Flow Using Thermodynamic Properties of Steam Iapws-95

Cited by 14 publications

References 5 publications

Analytical identification of the unmanned aerial vehicles' surfaces for the implementation at a 3D printer

Analytical identification of the unmanned aerial vehicles' surfaces for the implementation at a 3D printer

A Morris-Sobol Two-Layer Progressive Model for Sensitivity Analysis of Parameters in Rainfall Threshold Calculation of Flash Flood

Development and Experimental Validation of Real Fluid Models for CFD Calculation of ORC and Steam Turbine Flows

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