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首页> 外文会议>ASME international manufacturing science and engineering conference 2011 >EVALUATION OF A REVERSE OSCILLATORY FLOW MICROREACTOR DESIGN FOR THE SYNTHESIS OF UNIFORMLY-SIZED NANOPARTICLES
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EVALUATION OF A REVERSE OSCILLATORY FLOW MICROREACTOR DESIGN FOR THE SYNTHESIS OF UNIFORMLY-SIZED NANOPARTICLES

机译：用于合成均一纳米粒子的反向振荡微反应器设计的评估

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摘要

Computational fluid dynamics is used to refine the operating parameters of a Reverse Oscillatory Flow (ROF) microreaction system for the synthesis of uniformly-sized nanoparticles. The ROF mixing system uses highly advective flow regions to achieve high quality mixing over short mixing lengths. The mixing system is further enhanced by sinusoidal inlet flow conditions which create plugs having reduced diffusional lengths. Flow conditions leading to plug creation were found to be chiefly responsible for shorter mixing times. Residence time distributions (of simulated inert particles) were found to decrease with increasing pump displacement. It is expected that these conditions will lead to smaller particle size distributions. Mixing quality and residence time distribution are not captured well by Reynolds or Strouhal numbers; however the maximum inlet Reynolds number does correlate well with mixing time trends. Implications for flow conditions are discussed.
机译：计算流体动力学用于完善反向振荡流（ROF）微反应系统的操作参数，以合成大小均一的纳米粒子。 ROF混合系统使用高度对流流动区域，以在短混合时间内实现高质量混合。通过正弦形的入口流动条件进一步增强了混合系统，该条件形成了具有减小的扩散长度的塞子。发现导致堵塞产生的流动条件主要是导致较短的混合时间。发现（模拟惰性粒子的）停留时间分布随泵排量的增加而减小。预期这些条件将导致较小的粒度分布。雷诺数或斯特劳哈尔数不能很好地反映出混合质量和停留时间分布。但是最大进气雷诺数确实与混合时间趋势相关。讨论了对流动条件的影响。

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