弯曲通道中两相介质非等温流动的数学建模

IF 0.8 Q2 MATHEMATICS Lobachevskii Journal of Mathematics Pub Date : 2024-08-28 DOI:10.1134/s1995080224602200
R. I. Ibyatov, F. G. Akhmadiev
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引用次数: 0

摘要

摘要 研究了两相介质在几何形状复杂的弯曲通道和管道中的非等温流动数学模型。考虑到流动特性,在与流动区域相关的正交坐标系中写入了两相介质的简化运动方程,并用等流面法进行了求解。为实施计算实验,构建了计算流动的算法。该算法考虑到了两相介质物理特性随温度的变化。考虑到介质的有效粘度随温度的变化、流动的初始截面以及离心力场的影响,对抛物线形和锥形通道进行了数值计算。根据所进行的计算实验,研究了各种流动状态以及各种参数对流动区域流体力学状况的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Mathematical Modeling of Non-isothermal Flow of Two-phase Media in Curved Channels

Abstract

The mathematical modeling of the non-isothermal flow of two-phase media in curved channels and pipes of complex geometric shapes is considered. Simplified equations of motion of a two-phase medium, taking into account the flow characteristics, written in an orthogonal coordinate system associated with the flow region, are solved by the method of equal flow surfaces. An algorithm for calculating the flow is constructed for the implementation of a computational experiment. This takes into account changes in the physical characteristics of the two-phase medium depending on temperature. Numerical calculations have been performed for channels of parabolic and conical shapes, taking into account changes in the effective viscosity of the medium from temperature, the initial section of the flow, and the influence of the centrifugal force field. Based on the conducted computational experiment, various flow regimes and the influence of various parameters on the hydrodynamic situation in the flow region are studied.

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来源期刊
CiteScore
1.50
自引率
42.90%
发文量
127
期刊介绍: Lobachevskii Journal of Mathematics is an international peer reviewed journal published in collaboration with the Russian Academy of Sciences and Kazan Federal University. The journal covers mathematical topics associated with the name of famous Russian mathematician Nikolai Lobachevsky (Lobachevskii). The journal publishes research articles on geometry and topology, algebra, complex analysis, functional analysis, differential equations and mathematical physics, probability theory and stochastic processes, computational mathematics, mathematical modeling, numerical methods and program complexes, computer science, optimal control, and theory of algorithms as well as applied mathematics. The journal welcomes manuscripts from all countries in the English language.
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