水力喷射空气旋流器中射——旋流耦合流场的模拟分析
发布时间：2019-07-04 18:21
【摘要】：水力喷射空气旋流器(WSA)是一种新型高效的气液传质设备。本文采用雷诺应力模型和VOF模型对水力喷射空气旋流器内耦合场的流场分布进行了三维数值模拟研究。模拟研究结果表明,随着气速的增加,耦合场的速度分布的对称性不断减弱,且湍动能的均值沿竖直方向的衰减速率变大。其中轴向速度沿径向分布出现的最大值发生由靠近WSA的器壁附近向中心排气管附近转移的现象;径向速度在耦合场中部达到最大值;切向速度沿径向分布,普遍出现2个在WSA器壁附近和中心排气管附近的极值区域。研究结果可为对WSA的深入认识提供参考。
[Abstract]:Hydraulic jet air cyclone (WSA) is a new type of high efficiency gas-liquid mass transfer equipment. In this paper, Reynolds stress model and VOF model are used to simulate the flow field distribution of coupling field in hydraulic jet air cyclone. The simulation results show that the symmetry of the velocity distribution of the coupling field decreases with the increase of gas velocity, and the attenuation rate of the mean turbulent kinetic energy along the vertical direction increases. The maximum value of axial velocity along the radial distribution occurs from near the wall near WSA to near the central exhaust pipe; the radial velocity reaches the maximum in the middle of the coupling field; and the tangential velocity distributes along the radial direction, and two extreme regions near the WSA wall and the central exhaust pipe generally appear. The results of the study can provide a reference for the further understanding of WSA.
【作者单位】： 重庆理工大学;
【基金】：国家自然科学基金项目(21176273)
【分类号】：TQ051
本文编号：2510120
[Abstract]:Hydraulic jet air cyclone (WSA) is a new type of high efficiency gas-liquid mass transfer equipment. In this paper, Reynolds stress model and VOF model are used to simulate the flow field distribution of coupling field in hydraulic jet air cyclone. The simulation results show that the symmetry of the velocity distribution of the coupling field decreases with the increase of gas velocity, and the attenuation rate of the mean turbulent kinetic energy along the vertical direction increases. The maximum value of axial velocity along the radial distribution occurs from near the wall near WSA to near the central exhaust pipe; the radial velocity reaches the maximum in the middle of the coupling field; and the tangential velocity distributes along the radial direction, and two extreme regions near the WSA wall and the central exhaust pipe generally appear. The results of the study can provide a reference for the further understanding of WSA.
【作者单位】： 重庆理工大学;
【基金】：国家自然科学基金项目(21176273)
【分类号】：TQ051
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