Deformation and breakup of droplets of stabilized coal slime fuels interacting with an air jet

IF 4.2 2区工程技术 Q2 ENGINEERING, CHEMICAL

Advanced Powder Technology Pub Date : 2025-04-19 DOI:10.1016/j.apt.2025.104887

O.V. Vysokomornaya , R.S. Volkov , G.V. Kuznetsov , P.A. Strizhak

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Abstract

This research presents the experimental data on the influence of stabilizing additives on deformation and fragmentation behavior of waste-derived slurry droplets during their interaction with an air jet. The average radii and number of child droplets formed as a result of droplet breakup were recorded. The influence of the air jet velocity and the diameter of the parent droplet on the average radius and the number of secondary droplets was determined. The experiments demonstrated a dynamic change in the number and average radii of secondary droplets for different relative velocities of the parent slurry droplets. When adding a stabilizing additive to coal-water slurry, the number of secondary droplets decreased several times. Experimental data were analyzed using dimensionless criteria and deriving equations to predict the breakup characteristics of droplets of stabilized fuels over a wide range of air jet velocity. Maps of modes of droplet deformation and breakup were developed, plotted in coordinate systems using Weber, Reynolds, Ohnesorge and capillarity numbers.

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稳定煤泥燃料液滴与空气射流相互作用的变形和破碎

本文研究了稳定添加剂对废渣渣浆水滴与空气射流相互作用过程中变形和破碎行为影响的实验数据。记录了由于液滴破裂而形成的平均半径和子液滴的数量。测定了射流速度和母液滴直径对平均半径和二次液滴数的影响。实验表明，在不同的相对速度下，二次液滴的数量和平均半径会发生动态变化。在水煤浆中加入稳定剂后，二次液滴的数量减少了数倍。利用无量纲准则和推导方程对实验数据进行了分析，预测了稳定燃料液滴在大射流速度范围内的破碎特性。液滴变形和破裂模式的地图被开发出来，用韦伯、雷诺兹、奥内乔治和毛细数在坐标系中绘制出来。

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来源期刊

Advanced Powder Technology 工程技术-工程：化工

CiteScore

9.50

自引率

7.70%

发文量

424

审稿时长

55 days

期刊介绍： The aim of Advanced Powder Technology is to meet the demand for an international journal that integrates all aspects of science and technology research on powder and particulate materials. The journal fulfills this purpose by publishing original research papers, rapid communications, reviews, and translated articles by prominent researchers worldwide. The editorial work of Advanced Powder Technology, which was founded as the International Journal of the Society of Powder Technology, Japan, is now shared by distinguished board members, who operate in a unique framework designed to respond to the increasing global demand for articles on not only powder and particles, but also on various materials produced from them. Advanced Powder Technology covers various areas, but a discussion of powder and particles is required in articles. Topics include: Production of powder and particulate materials in gases and liquids(nanoparticles, fine ceramics, pharmaceuticals, novel functional materials, etc.); Aerosol and colloidal processing; Powder and particle characterization; Dynamics and phenomena; Calculation and simulation (CFD, DEM, Monte Carlo method, population balance, etc.); Measurement and control of powder processes; Particle modification; Comminution; Powder handling and operations (storage, transport, granulation, separation, fluidization, etc.)