撞击流反应器内流场特性研究进展

doi:10.16085/j.issn.1000-6613.2016-2101

摘要/Abstract

摘要： 综述了国内外撞击流反应器内流场速度和脉动振荡特性的研究进展。目前，对非限制撞击流反应器内撞击流体的径向速度发展及轴向速度与撞击驻点的脉动特性都有了系统研究，对撞击驻点的振荡模式进行了划分，并得出大量适用于不同喷嘴间距的速度关联式，但对驻点振荡模式的产生机理还没有明确解释。层流状态下随着雷诺数增大，众多学者对受限撞击流反应器内流型的流动模式进行了划分，提出了出现吞噬流模式的临界参数关联式，由于结构等参数的变化当前还没有普遍适用控制流型模式变化的关联式。在浸没撞击流反应器内用非线性分析法确定撞击区并划分了流场区域，但目前尚不能揭示湍流状态下流场能量分布与速度信号等的变化规律。最后作者对撞击流反应器内部流场结构的研究前景进行了展望。

关键词: 撞击流反应器, 流场特性, 脉动振荡, 速度场

Abstract: The features of velocity field and pressure fluctuation in impinging stream reactor were summarized in the paper. The radial velocity, axial velocity and oscillation behavior in the unconfined impinging stream reactor were studied systematically. The oscillatory modes of the stagnation points were divided. And a large number of velocity correlation formulas suitable for different nozzle distance were obtained, but the mechanism of oscillation was not clearly explained. With the increase of the Reynolds number in the laminar flow state, many scholars had divided the flow type in the confined impinging stream reactor, and proposed the critical parameter correlation of engulfment flow. Due to the change of the structure parameters, there was no universally applicable correlation. The impinging zone and the flow field pattern were determined by non-linear analysis in the submerged impinging stream reactor. However, the mechanism of energy distribution and velocity signal in the turbulent flow field cannot be revealed. The trends of research on flow field in impinging stream reactor were also pointed out.

Key words: impinging stream reactor, flow characteristics, fluctuation and oscillation, velocity field

中图分类号:

TQ052

张建伟, 张志刚, 冯颖, 施博文. 撞击流反应器内流场特性研究进展[J]. 化工进展, 2017, 36(10): 3540-3548.

ZHANG Jianwei, ZHANG Zhigang, FENG Ying, SHI Bowen. Research progress of flow field characteristics in impinging stream reactor[J]. Chemical Industry and Engineering Progress, 2017, 36(10): 3540-3548.

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