撞击流反应器内流场特性研究进展

发布时间：2018-06-08 22:55

本文选题：撞击流反应器 + 流场特性　；参考：《化工进展》2017年10期

【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。
[Abstract]:The research progress of flow field velocity and pulsating oscillation in impinging flow reactors at home and abroad is reviewed. At present, the radial velocity development of impingement fluid and the pulsation characteristics of axial velocity and impingement point in unconfined impingement flow reactor have been systematically studied, and the oscillatory modes of impingement point have been divided. A large number of velocity correlations suitable for different nozzle spacing have been obtained, but the mechanism of the static oscillation mode has not been clearly explained. With the increase of Reynolds number in laminar flow, many scholars have divided the flow pattern in the confined impinging flow reactor, and put forward the critical parameter correlation formula for the phagocytic flow model. Because of the change of structure and other parameters, there is no universal correlation to control the variation of flow pattern. In the submerged impinging flow reactor, the impinging zone is determined by nonlinear analysis method and the flow field region is divided. However, the variation of energy distribution and velocity signal of the flow field in turbulent state can not be revealed at present. Finally, the prospect of research on the flow field structure in impinging flow reactor is prospected.
【作者单位】：沈阳化工大学能源与动力工程学院;
【基金】：国家自然科学基金项目(21476141)
【分类号】：TQ052

【相似文献】