新技术增加了脉动场，以准确调节气体液体泰勒流量

微反应器对在连续流量模式下大规模生产高级材料和化学物质具有很大的希望。欧洲杯足球竞彩这是由于它们的几个好处，例如较高的热量和传质效率，易于扩展，高可控性等。

Among various flow patterns, gas-liquid Taylor Flow has been established as a perfect flow regime for the optimization of chemical reactions. But to date, there has been a lack of technique for achieving accurate control of the Taylor flow pattern.

在上海高级研究所（SARI）的张教教授和副教授Jie Zhang的指导下中国科学院欧洲杯线上买球(CAS), a team of researchers was motivated by such a challenge to devise a new, innovative technique of adding pulsation field to accurately control the gas-liquid Taylor Flow.

The findings of the study were reported in a paper published in the化学工程杂志。作为研究的一部分，研究人员采用了简单的阀布置来启动脉动场。因此，他们能够产生液体sl液的周期性加速和减速运动。

研究人员通过使用计算流体动力学（CFD）模拟来梳理视觉流实验，以研究在脉动气体摄入条件下泰勒流动模式的时间空间迁移。

The team used a high speed camera to monitor the trajectory of a gas-liquid interface by applying the Lagrangian method. The numerical simulation helped them to obtain the flow field distribution at various moments by applying the Euler method.

同时，研究人员还对气泡形成过程中所涉及的力以及脉动下气泡长度和速度的性质进行了深入的分析。

An analysis of the temporal-spatial migration of the pattern by the researchers showed that there is a possibility that the pulsation will increase the power of inertial force on the Taylor flow pattern. It is also possible that the pattern will be destroyed if the pulsation energy surpasses a specific value.

This study offers a new technique to accurately control the gas-liquid Taylor flow. In addition, it will also power future applications of this technique to strengthen various gas-liquid reactions in continuous flow.

This study was financially supported by the Youth Innovation Promotion Association of CAS, the STS Program of CAS and the Frontier Scientific Research Project funded by Shell.

Journal Reference:

张，Y.，等。（2021）通过微通道中的脉动气体摄入量调节气体液体流量。化学工程杂志。doi.org/10.1016/j.cej.2021.129055。

来源：https://english.cas.cn/