Flow field characterization in a vertically oriented cold wall CCVD reactor by particle image velocimetry
Flow field characterization in a vertically oriented cold wall CCVD reactor by particle image velocimetry
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DOI：
10.1016/j.cej.2012.01.062
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发表时间：
2012-03
影响因子：
15.1
通讯作者：
Karla Reinhold-López;A. Braeuer;A. Schmitt;N. Popovska-Leipertz;A. Leipertz
中科院分区：
文献类型：
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作者：
Karla Reinhold-López;A. Braeuer;A. Schmitt;N. Popovska-Leipertz;A. Leipertz
采用粒子图像测速技术（PIV）对用于催化化学气相沉积（CCVD）碳纳米管（CNTs）的垂直冷壁反应器内的流场进行了研究。已经获得了关于速度分量的径向和轴向分布的定量信息，并且在其基础上，估计了实际体积流量、气体温度、射流雷诺数、工作状态以及在不同操作条件下进料流进入基底表面的停留时间曲线和最小撞击时间。的PIV测量的可靠性进行了评估，相对于热泳力的影响，被部分妥协，在所定义的区域连接到基板表面。
Particle image velocimetry (PIV) was applied to characterize the flow field in a vertically oriented cold wall reactor, which is used for the catalytic chemical vapor deposition (CCVD) of carbon nanotubes (CNTs). Quantitative information about the radial and axial profiles of the velocity components has been obtained and on their basis, actual volumetric flow rates, gas temperatures, the jet Reynolds number, the working regime as well as the residence time curves and the minimum impingement time of the feed flow into the substrate surface at different operation conditions were estimated. The reliability of the PIV measurements has been assessed with respect to the effect of the thermophoretic force, being partially compromised at defined regions attached to the substrate surface.