ISSN 1991-2927
 

ACP № 4 (62) 2020

Author: "Aleksandr Nikolaevich Zolotov"

Aleksandr Nikolaevich Zolotov, Postgraduate Student at the Department of Heat Power Engineering of Ulyanovsk State Technical University; graduated from UlSTU; an author of articles in the field of numerical modeling of hydrogasdynamic processes. e-mail: anzolotov@bk.ruA.N. Zolotov,

Vladislav Nikolaevich Kovalnogov, Doctor of Sciences in Engineering; graduated from Kazan State University named after V.I. Ulyanov-Lenin; Head of the Department of Heat Power Engineering of UlSTU; an author of articles, monographs, and inventions in the field of modeling, research and optimization of the thermal and hydrogasdynamic processes in power installations and processing equipment. e-mail: kvn@ulstu.ruV.N. Kovalnogov,

Ruslan Vladimirovich Fedorov, Candidate of Sciences in Engineering; graduated from Ulyanovsk State Technical University; Associate Professor of the Department of Heat Power Engineering of UlSTU; an author of articles, monographs and inventions in the field of modeling and studying of thermal and hydrogasdynamic processes in heat engineering. e-mail: r.fedorov@ulstu.ruR.V. Fedorov

Software and information system for analyzing the thermal state of turbine machine blades62_11.pdf

Increased input parameters of the pressure and temperature of the working fluid in gas turbine installations result in the complex gasdynamic and temperature operation modes of the blade apparatus, but it is the principal tool for improving the energy efficiency of gas turbine installations in general. Applying the efficient methods of mathematical modeling and numerical study of gas-dynamic processes of a turbine machine may simplify this process and reduce financial costs. The article considers the main methods of increasing the energy efficiency of modern gas turbine machines are considered. One of the implementation ways is the use of software systems for calculating the thermal state of turbine machine blades.

Numerical modeling, thermal protection, convective film cooling, software and information system, dispersed flow, gasdynamic temperature stratification.

2020_ 4

Sections: Mathematical modeling

Subjects: Mathematical modeling.



Aleksandr Nikolaevich Zolotov, Post-graduate Student at the Department of Heat-and-Power Engineering of Ulyanovsk State Technical University; graduated from Ulyanovsk State Technical University; graduated from Ulyanovsk State Technical University; an author of articles in the field of the numerical modeling of gas-dynamic processes. [e-mail: anzolotov@bk.ru]A. Zolotov,

Vladislav Nikolaevich Kovalnogov, Ulyanovsk State Technical University, Doctor of Engineering, Head of the Department of Heat-and-Power Engineering of Ulyanovsk State Technical University; an author of articles, monographs, and inventions in the field of simulation, research, and optimization of thermal and gas-dynamic processes in power installations and processing equipment. [e-mail: kvn@ulstu.ru]V. Kovalnogov,

Maria Igorevna Kornilova, Ulyanovsk State Technical University, a second-year student of Ulyanovsk State Technical University; an author of articles in the field of the numerical modeling of gas-dynamic processes. [e-mail: masha.kornilova.1995@mail.ru]M. Kornilova

Modeling and Researching the Technique of Thermal Protection of Turbomachines Blades With the Use of Gas-dynamic Temperature Stratification 000_12.pdf

Raising the initial temperature and pressure of the working fluid is one of the simplest and most effective ways of improving fuel efficiency and reducing metal consumption of turbines. Traditional technology of turbine blades production is quite cost and time consuming in production. Therefore, their creation requires the use of mathematical models which serve as a tool for analysis, improvement and selecting the most promising solutions of the refrigeration and increase of the prediction accuracy at the design stage of their effectiveness. Mathematical modeling of the thermal state is widely used in the creation of modern gas turbines [1]. An important objective is the numerical simulation of the spatial flow of the heat transfer in subsonic and transonic lattices. In order to create effective ways of thermal protection, it is necessary to know the distribution of nonstationary temperature fields on the surface and in the body of the scapula. For this purpose, the heat flows from the gas to the blades must be accurately determined taking into account the impact of the mode of flow, thermals, pressure gradient, and other factors [2]. In the paper, the proposed mathematical model and method of numerical investigation of the thermal state of blades of turbomachines streamlined by a supersonic dispersed flow with regard to the phenomenon of gas-dynamic temperature stratification was proposed. With the aim to increase the accuracy of the settlement prediction of the thermal state of blades due to obtaining reliable data as well as improve the efficiency of cooling systems to increase the service life of the blades, the authors have developed the program-informational complex which will take into account the results of studies of gas-dynamic processes in high- speed, disperse flows including the phenomenon of gas-dynamic temperature stratification carried out at the Department of Heat Power Engineering at Ulyanovsk State Technical University.

Mathematical modeling, numerical methods, thermal protection, convective-film cooling, software and information complex, dispersed flow, gas-dynamic temperature stratification.

2015_ 4

Sections: Mathematical modeling

Subjects: Mathematical modeling, Computer-aided engineering.


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