Investigation of Heat Transfer in Bubbling Fluidization with an Immersed Tube
Fluidized beds with immersed tubes are widely used in many applications involving exothermic/endothermic reactions. Temperature control is an important concern in these applications, and has been studied extensively in literature by experiments at a macroscopic level. However, it is difficult to obtain microscopic information from those studies which is important to develop understanding of heat transfer mechanisms in this system. In this work, a coupled discrete particle simulation (DPS) and computational fluid dynamics (CFD) method is used to study heat transfer in fluidized beds with immersed tube. The results show that the predicted distribution and magnitude of average local heat transfer coefficients (HTC) agree well with experimental measurements. The related mechanisms are analyzed through particle flow pattern, porosity distribution and contact number. The results are useful for temperature control and prediction of tube erosion in fluidized beds.
Discrete Particle Simulation Computational Fluid Dynamics Heat Transfer Fluidization Immersed Tube
Q.F.Hou Z.Y.Zhou A.B.Yu
Lab for Simulation and Modelling of Particulate Systems, School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia
国际会议
西安
英文
355-360
2009-07-11（万方平台首次上网日期，不代表论文的发表时间）