Sensitivity analysis of mesoscale structural parameters for simulation of fluidized beds  

作　　者：Wenming Liu Hongzhong Li Qingshan Zhu Chaoquan Hu 

机构地区：[1]Sinopec Research Institute of Petroleum Processing,Beijing 100083,China [2]State Key Laboratory of Multi-Phase Complex Systems,Institute of Process Engineering,Chinese Academy of Sciences,P.O.Box 353,Beijing 100190,China [3]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Particuology》2019年第6期77-93,共17页颗粒学报（英文版）

基　　金：The authors are grateful to the financial support from National Natural Science Foundation of Chinaunder GrantNo.21325628 and from the State Key Development Program for Basic Researchof China(973 Program)under Grant 2015CB251402.

摘　　要：This study presents new numerical drag models with which to analyze the sensitivity of mesoscale structural parameters in bubbling,turbulent,and circulating fluidized beds.The drag models are derived using the method of transfer-coefficient-based structural parameters(TC-SP).Analyzing the sensitivity of the structural parameters reveals that the coefficients associated with drag are more sensitive to parameters in the dense phase than to those in the dilute phase,especially the superficial slip velocity.On the basis of these results,the TC-SP drag model is simplified further.Interestingly,despite having half the number of parameters of conventional structure-based drag models,the simplified TC-SP drag model achieves simulation results that are equally or more accurate.With simple calculations and improved accuracy using coarse grids,the model reported in this study is capable of predicting the hydrodynamics of the three types of fluidized beds.

关 键 词：FLUIDIZATION SIMULATION Sensitivity analysis Dense phase Drag 

分 类 号：O35[理学—流体力学]