Modeling the propagation of liquid droplets in a two-phase wall jet injected through an annular gap into a heated co-current turbulent airflow

IF 0.5 4区工程技术 Q4 ENGINEERING, AEROSPACE

Thermophysics and Aeromechanics Pub Date : 2026-06-09 DOI:10.1134/S0869864325050117

M. A. Pakhomov, V. I. Terekhov, D. H. Kong

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引用次数: 0

Abstract

The dynamics of dispersed phase propagation during injection of a gas-droplet wall jet into a co-current turbulent heated airflow is numerically simulated with variations in the droplet mass concentration at the inlet cross-section and their initial diameter. The solution is based on a system of axisymmetric Reynolds-averaged Navier–Stokes (RANS) equations, taking into account the two-phase character of the flow. The Eulerian approach is primarily used to describe the aerodynamics and heat and mass transfer in the gas and dispersed phases. The Lagrangian and full Lagrangian approaches are used in the study for additional verification of the developed mathematical model. A significant effect of the liquid mass concentration on the particle concentration profiles across the channel cross-section is demonstrated. The results obtained using the Eulerian and Lagrangian descriptions are compared. The applicability of both approaches for describing the dynamics and heat transfer of a two-phase wall jet is demonstrated (the difference between two approaches does not exceed 15 %).

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模拟液滴在两相壁面射流中通过环形间隙注入加热的共流湍流气流中的传播

数值模拟了气滴壁面射流注入共流湍流加热气流时弥散相传播的动力学过程，计算了入口截面液滴质量浓度和初始直径的变化。考虑到流体的两相特性，求解基于轴对称reynolds -average Navier-Stokes （RANS）方程组。欧拉方法主要用于描述气相和分散相中的空气动力学和传热传质。在研究中使用拉格朗日和全拉格朗日方法对所建立的数学模型进行了额外的验证。液体质量浓度对通道横截面上的颗粒浓度分布有显著影响。比较了用欧拉和拉格朗日描述得到的结果。证明了两种方法在描述两相壁面射流的动力学和传热方面的适用性（两种方法之间的差异不超过15%）。

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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来源期刊

Thermophysics and Aeromechanics THERMODYNAMICS-MECHANICS

CiteScore

0.90

自引率

40.00%

发文量

审稿时长

>12 weeks

期刊介绍： The journal Thermophysics and Aeromechanics publishes original reports, reviews, and discussions on the following topics: hydrogasdynamics, heat and mass transfer, turbulence, means and methods of aero- and thermophysical experiment, physics of low-temperature plasma, and physical and technical problems of energetics. These topics are the prior fields of investigation at the Institute of Thermophysics and the Institute of Theoretical and Applied Mechanics of the Siberian Branch of the Russian Academy of Sciences (SB RAS), which are the founders of the journal along with SB RAS. This publication promotes an exchange of information between the researchers of Russia and the international scientific community.