ISSN 1991-2927
 

ACP № 3 (65) 2021

Author: "Anna Aleksandrovna Tcynaeva"

Anna Aleksandrovna Tcynaeva, Samara State University of Architecture and Civil Engineering, Candidate of Engineering; graduated from Ulyanovsk State Technical University; Associate Professor at the Department of Heat-and-gas Supply and Ventilation of Samara State University of Architecture and Civil Engineering; an author of development works and articles in the field of mathematical modeling of heat-exchange processes in engineering. [e-mail: a.tsinaeva@rambler.ru]A. Tcynaeva

Numerical Investigation of the Temperature Stratification 36_9.pdf

The intensity of heat and mass transfer in devices based on the gas-dynamic temperature stratification, for example, in a supersonic pipe temperature stratification (in the Leontief’s pipe) is determined by the heat flow through the separation wall between subsonic and supersonic flows. This paper presents the mathematical modeling and numerical study of heat transfer in devices of gas-dynamic temperature stratification using passive stimulation techniques. The efficiency of heat pipes (HP) and the metal edges of the same configuration were researched. Mathematical modeling was performed using a mathematical model. The mathematical model includes differential equations that describe the motion and heat transfer in the boundary layer; equations for calculation of heat transfer processes in heat pipes; equations to calculate the heat flow between subsonic and supersonic flows in the device of gas-dynamic temperature stratification.It was found that the intensification of heat transfer devices based on the gas-dynamic temperature stratification (in the Leontief’s pipe) through the use of heat pipes is increasing up to 3 times. It was established that the use of heat pipes with a wick of material copper-water is more of using efficiency of heat pipes with the working material in the aluminum-acetone up to 1.05 ... 1.12 times.

Mathematical modeling, numerical investigation, temperature stratification, intensification, heat pipes.

2014_ 2

Sections: Mathematical modeling

Subjects: Mathematical modeling.


Anna Alexandrovna Tcynaeva, Samara State University of Architecture and Civil Engineering, Candidate of Engineering; graduated from Ulyanovsk State Technical University; Associate Professor at the Deartment of Heat-and-gas Supply and Ventilation of Samara State University of Architecture and Civil Engineering; author of development works and articles in the field of mathematical modeling of heat-exchange processes in engineering. [e-mail: a.tsinaeva@rambler.ru]A. Tcynaeva,

Ekaterina Alexandrovna Tcynaeva, Ulyanovsk State Technical University, Candidate of Engineering; graduated from Ulyanovsk State Technical University; Associate Professor at the Deartment of Heat-and-power Engineering of Ulyanovsk State Technical University; author of articles in the field of mathematical modeling of heat-exchange processes in engineering. [e-mail: tsinaeva-kate@rambler.ru]E. Tcynaeva,

Evgeny Vladimirovich Shkolin, Ulyanovsk State Technical University, Student at the Deartment Heat-and-power Engineering of Ulyanovsk State Technical University. Research interests are heat engineering, heat pipes. [e-mail: shkolin-e@ya.ru]E. Shkolin

Mathematical Modeling of the Temperature Stratification of the Modified Leontief Pipe With Heat Pipes 32_5.pdf

Mathematical modeling and numerical investigation of the temperature stratification of the modified Leontief's pipe with heat pipes are conducted. A possibility of intensification of turbulent flows temperature stratification by means of using heat pipes is considered. It is identified that an application of heat pipes enables to increase the efficiency of the temperature stratification of up to three times.

Mathematical modeling, numerical investigation, temperature stratification, heat pipes.

2013_ 2

Sections: Mathematical modeling, calculi of approximations and software systems

Subjects: Mathematical modeling.


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