Estudo dos aspectos fluidodinâmicos de um leito fluidizado com tubos imersos

Abstract

In this work was numerically studied the modeling and analysis of bubble dynamics and erosion in a fluidized bed with immersed tubes. Fluidized systems have a number of applications in thermal processes due to their noteworthy heat transfer properties. In many applications, the heat transfer between the fluidized bed and immersed surface exists. In the fluid dynamics discern immersed tubes are subject to the forces due to bubble and particle's passage. Erosion and vibration can lead to an earlier fall through of the tubes. In this work, the two fluid model was adopted to investigate the bubble's parameters, such as dominant frequency, mean velocity and bubble length, in a solid fluidized bed. Finally, the monolayer kinect energy model, was employed to describe the erosion phenomena in the tubes. The obtained results are in good agreement with the experimental results from literature.