| 基于改进的CE/SE格式数值分析气相爆轰合成纳米TiO2颗粒的研究 |
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| 引用本文： | 罗宁,申华,刘凯欣,沈洋,陈亦涛.基于改进的CE/SE格式数值分析气相爆轰合成纳米TiO2颗粒的研究[J].北京理工大学学报,2013,33(Z2):135-139. |
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| 作者姓名： | 罗宁 申华 刘凯欣 沈洋 陈亦涛 |
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| 作者单位： | 中国矿业大学 力学与建筑工程学院, 力学与工程科学系, 江苏, 徐州 221116;中国矿业大学 深部岩土力学与地下工程国家重点实验室, 江苏, 徐州 221116;北京大学 工学院力学与工程科学系和湍流与复杂系统国家重点实验室, 北京 100871;北京理工大学 爆炸科学与技术国家重点实验室, 北京 100081;北京大学 工学院力学与工程科学系和湍流与复杂系统国家重点实验室, 北京 100871;北京大学 工学院力学与工程科学系和湍流与复杂系统国家重点实验室, 北京 100871;北京大学 工学院力学与工程科学系和湍流与复杂系统国家重点实验室, 北京 100871;北京大学 工学院力学与工程科学系和湍流与复杂系统国家重点实验室, 北京 100871 |
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| 基金项目： | 国家自然科学基金资助项目（11272081，11332002）；中国矿业大学“启航计划”基金及人才引进启动基金和北京理工大学爆炸科学与技术国家重点实验室开放课题资助项目（KFJJ13-5M） |
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| 摘 要： | 将改进的时空守恒元算法（CE/SE）与一种二步反应模型相结合实现耦合并行计算，实现多元气相爆轰化学反应二维数值模拟. 数值分析结果初步表明，稳定的爆轰流场中气体的密度达到6.4 kg/m3，爆轰波速约1 580 m/s，压力和温度场约为7 MPa和2 560 K，最终获得纳米颗粒大致分布在28~35 nm之间，与实验结果吻合较好. 应用该方法可以成功地模拟气相爆轰过程的爆轰反应特性，而且能够更够准确地模拟爆轰流场纳米颗粒的生长特征.
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| 关 键 词： | 爆轰波 改进的CE/SE 数值分析 气相爆轰 纳米颗粒生长 |
| 收稿时间： | 2013/11/15 0:00:00 |
Numerical Simulation of Gas-Detonation Systhesis of TiO2 Nanoparticles Based On Improved CE/SE Scheme |
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| LUO Ning,SHEN Hu,LIU Kai-xin,SHEN Yang and CHEN Yi-tao.Numerical Simulation of Gas-Detonation Systhesis of TiO2 Nanoparticles Based On Improved CE/SE Scheme[J].Journal of Beijing Institute of Technology(Natural Science Edition),2013,33(Z2):135-139. |
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| Authors: | LUO Ning SHEN Hu LIU Kai-xin SHEN Yang and CHEN Yi-tao |
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| Institution: | Department of Mechanics and Engineering Science, School of Mechanics And Civil Engineering(CUMT), Xuzhou, Jiangsu 221116, China;State Key Laboratory for Geomechanics and Deep Underground Engineering(CUMT), Xuzhou, Jiangsu 221116, China;LTCS and Department of Mechanics & Aerospace Engineering, College of Engineering, Peking University, Beijing 100871, China;State key laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China;LTCS and Department of Mechanics & Aerospace Engineering, College of Engineering, Peking University, Beijing 100871, China;LTCS and Department of Mechanics & Aerospace Engineering, College of Engineering, Peking University, Beijing 100871, China;LTCS and Department of Mechanics & Aerospace Engineering, College of Engineering, Peking University, Beijing 100871, China;LTCS and Department of Mechanics & Aerospace Engineering, College of Engineering, Peking University, Beijing 100871, China |
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| Abstract: | An improved space-time conservation element and solution element (CE/SE) scheme with a chemical reaction models-two-step reaction model were constructed by proposing a new structure of solution elements and conservation elements based on the rectangular mesh. Numerical simulation results describe that the physical and chemical characteristics of the multi-gas phase flows such as the density of gas, velocity of wave, temperature and pressure are 6.4 kg/m3,1 580 m/s, 7 MPa and 2 560 K, respectively. The results show that the improved CE/SE scheme and the two step reaction model is easy to be implemented and high accurate for nanoparticle growth during the gas-phase detonation reaction process. |
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| Keywords: | detonation wave improved CE/SE numerical analysis gas-detonation nanoparticle growth |
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