Numerical Modeling of Gas-Dispersed Dilute Flows Using the Continuum Approach

IF 0.6 4区工程技术 Q4 MECHANICS

Fluid Dynamics Pub Date : 2026-02-05 DOI:10.1134/S0015462825603948

I. A. Kryukov, I. E. Ivanov

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Abstract

A computational algorithm for calculating flows of nonequilibrium gas-dispersed media (gas–solid particles, gas–liquid droplets) with a low volume concentration of the dispersed phase has been developed. Within the Euler–Euler approach, a fully continuous description of the two-phase medium is implemented based on the mathematical model for two-phase flows by A. Chinnayya, R. Saurel, and Q. Carmouze (2016). The effect of pressure and phase velocity relaxation is taken into account during phase interaction. The computational algorithm utilizes the high-resolution Godunov method and HLL Riemann solver. The main focus is on accounting for the influence of phase velocity nonequilibrium (slip) on the relationship between the trajectories of particles and the gas phase, as well as on the interaction of the dispersed phase with solid walls. Test calculations are carried out in the case of a one-dimensional flow of a two-phase medium and methodological studies examining how the particle size and the dispersed-phase volume fraction affect the structure and parameters of gas-dispersed flows in two-dimensional regions bounded by solid surfaces.

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气体分散稀流的连续介质数值模拟

提出了一种计算分散相体积浓度较低的非平衡气相分散介质（气固颗粒、气液液滴）流动的计算算法。在欧拉-欧拉方法中，基于a . Chinnayya、R. Saurel和Q. Carmouze（2016）的两相流数学模型，实现了对两相介质的完全连续描述。在相互作用过程中考虑了压力和相速度弛豫的影响。计算算法采用高分辨率Godunov方法和HLL Riemann解算器。重点是考虑相速度不平衡（滑移）对粒子与气相轨迹关系的影响，以及对分散相与固体壁的相互作用的影响。在两相介质的一维流动情况下进行了测试计算，并进行了方法学研究，检查了颗粒尺寸和分散相体积分数如何影响以固体表面为界的二维区域中气体分散流动的结构和参数。

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来源期刊

Fluid Dynamics MECHANICS-PHYSICS, FLUIDS & PLASMAS

CiteScore

1.30

自引率

22.20%

发文量

审稿时长

6-12 weeks

期刊介绍： Fluid Dynamics is an international peer reviewed journal that publishes theoretical, computational, and experimental research on aeromechanics, hydrodynamics, plasma dynamics, underground hydrodynamics, and biomechanics of continuous media. Special attention is given to new trends developing at the leading edge of science, such as theory and application of multi-phase flows, chemically reactive flows, liquid and gas flows in electromagnetic fields, new hydrodynamical methods of increasing oil output, new approaches to the description of turbulent flows, etc.