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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

Keywords: 爆轰波,改进的CE/SE,数值分析,气相爆轰,纳米颗粒生长

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Abstract:

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6.4kg/m3,爆轰波速约1580m/s,压力和温度场约为7MPa和2560K,最终获得纳米颗粒大致分布在28~35nm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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