涡旋燃烧器中煤粉氧燃烧过程的计算研究

IF 0.5 4区工程技术 Q4 ENGINEERING, AEROSPACE

Thermophysics and Aeromechanics Pub Date : 2024-12-13 DOI:10.1134/S0869864324030156

V. A. Kuznetsov, D. M. Bozheeva, A. A. Dekterev, A. V. Minakov

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引用次数: 0

摘要

本文对煤粉火焰氧燃烧过程中涡流燃烧器中的空气动力学和热传递进行了数值研究。所提出的数值方法利用煤在流动中氧燃烧的实验数据进行了测试。考虑了爆炸中氧气浓度对无氮环境下煤粉着火和燃烧过程的影响。研究结果表明，对于所研究的燃烧器，氧气浓度从 40.1 体积%增加到 66.7 体积%会导致流动结构发生变化，火焰尺寸扩大，距离燃烧器 1.5 米处的未燃烧固体碳浓度平均值从 0.00136 克/立方米增加到 0.4 克/立方米。

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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Computational study of the processes of pulverized coal oxygen combustion in a vortex burner

Numerical studies of aerodynamics and heat transfer in a vortex burner during flame oxygen combustion of pulverized coal are presented. The proposed numerical method has been tested using experimental data on oxygen combustion of coal in a flow. The influence of oxygen concentration in the blast on the processes of ignition and combustion of coal dust in a nitrogen-free environment has been considered. It has been established that for the burner under study, an increase in oxygen concentration from 40.1 to 66.7 vol. % leads to a change in the flow structure, an extension of the flame size, and an increase in the average value of unburned solid carbon concentration from 0.00136 to 0.4 g/m³ at a distance of 1.5 m from the burner.

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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.