文献类型：期刊文献

中文题名：受限气固两相射流的实验研究和数值模拟

英文题名：Experimental Study and Numerical Simulation of Confined Gas-Solid Two-Phase Jet

作者：秦军[1];李伟锋[1];代正华[1];陈谋志[1];刘海峰[1];龚欣[1];于遵宏[1]

机构：[1]华东理工大学资源与环境工程学院,上海200237

年份：2005

卷号：19

期号：5

起止页码：619

中文期刊名：高校化学工程学报

外文期刊名：Journal of Chemical Engineering of Chinese Universities

收录：CSTPCD;;EI(收录号：2006029636825);Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家重点基础研究发展规划资助项目(2004CB217703)

语种：中文

中文关键词：PV4A颗粒测速仪;气固两相射流;数值模拟;湍流扩散

外文关键词：PV4A particle velocity analyzer; gas-solid two-phase jet; numerical simulation; turbulent dispersion

摘要：采用PV4A颗粒测速仪测量受限气固两相射流流场中固体颗粒的速度和浓度并运用CFD软件对颗粒相进行数值模拟,模拟和实验结果基本吻合。结果表明,颗粒轴线速度衰减存在一个峰值而轴线相对浓度在起始段急剧衰减然后趋于平缓;颗粒因为湍流扩散在炉壁上有富集现象,并且相对于小粒径颗粒,大颗粒在壁面富集现象更明显。实验结果对粉煤气流床气化炉的工业应用有重要的参考意义。
The PV4A particle velocity analyzer was used to measure solids velocity and concentration in the flow field generated by a confined gas-solid two-phase jet and the CFD software was applied to simulate the solids flow. The simulating results agree with the experimental data on the whole. The results show that along the axial direction there is a peak value before the decrease of particle axial velocity and the axial relative concentration declines sharply at first and then declines slowly. There is particle enrichment near the gasifier wall caused by the turbulent dispersion and this phenomenon is more obvious for big particles flow than for small panticles flow. The experimental result is of importantce for industrial application of the entrained flow coal gasifler.