关键词: 流体力学, 气固两相流, 紊动射流, 数值模拟, 运动轨迹

Abstract:

The trajectories of different diameter dp particle were simulated under the conditions of different jetcrossflow ratio R and jet exit diameter D's turbulent jettocrossflow, by using the renormalization group (RNG) kε model and SIMPLEC algorithm. The computation results showed that: ①It is approximately to symmetry in Y axis that the effect causing the particle by the flow field of round the jet hole distributes beside the XZ symmetry surface. With the increasing of the |Y/D|, the pull causing by the jet boost up at first and then take off. ②With the increasing of the jet diameter, the pull of the particle round the jet hole increase, and lengthen the journey in which the velocity of the particle is accelerated, the trajectory of the particle curved greater. ③With the increasing of R, the force of the particle suffer from the jet strengthen, ④The small diameter particle is good for following the flow, it's trajectories can reflect the trend of the flow field better.

Key words: hydromechanics, gassolid two phase flow, turbulent jet, numerical simulation, trajectory