摘要
本工作研究了TiO_(2)在瞬时高温高压的气相爆炸反应过程中的纳米颗粒生长特性。采用计算流体动力学模拟了气体爆炸在爆轰管内的火焰传播过程和温度-时间历程关系,并将其引入颗粒生长模型,通过试验对该模型进行修正。结果表明,在气相爆轰反应中,反应温度和时间是影响其颗粒生长的主要因素,提出了粒径修正系数k对经典的颗粒生长模型进行改进,改进后的数值模型可以较精确预测TiO_(2)纳米颗粒的生长特性,这为TiO_(2)纳米颗粒的可控合成提供了有效的理论支持。
This research investigated the growth characteristics of TiO_(2) nanoparticles in the instantaneous high-temperature and high-pressure gaseous detonation reaction.Computational fluid dynamics was used to simulate the flame propagation process and the temperature-time relationship of the gas explosion in the detonation tube,and it was introduced into the particle growth model.The model was modified through experiments.The results show that the reaction temperature and time are the main factors affecting the particle growth in the gaseous detonation reaction.A particle size correction coefficient k is proposed to improve the classical particle growth model.The improved numerical model can accurately predict the growth characteristics of TiO_(2) nanoparticles,which provides effective theoretical support for the controllable synthesis of TiO_(2) nanoparticles.
作者
吴林松
王星之
路世伟
陈翔
闫鸿浩
Wu Linsong;Wang Xingzhi;Lu Shiwei;Chen Xiang;Yan Honghao(State Key Laboratory of Precision Blasting,Jianghan University,Wuhan 430056,China;Hubei Key Laboratory of Blasting Engineering,Jianghan University,Wuhan 430056,China;School of Urban Construction,Yangtze University,Jingzhou 434023,China;Department of Engineering Mechanics,Dalian University of Technology,Dalian 116024,China)
出处
《稀有金属材料与工程》
北大核心
2025年第4期1008-1014,共7页
Rare Metal Materials and Engineering
基金
国家自然科学基金(12302436)
精细爆破国家重点实验室、湖北省爆破工程重点实验室开放基金(BL2021-17)。
作者简介
吴林松,男,1989年生,博士,副教授,长江大学城市建设学院,湖北荆州434023,E-mail:wulinsong@yangtzeu.edu.cn;Corresponding author:Chen Xiang,Ph.D.,Associate Professor,State Key Laboratory of Precision Blasting,Jianghan University,Wuhan 430056,P.R.China,E-mail:chenxiang@jhun.edu.cn。
