基于双流体模型的喷动-流化床不同流动形态的模拟研究  

A Study of Spout-fluid Bed at Different Flow Structures based on Two-fluid Model

作　　者：赵俊楠 王会宁[2] 戈朝强 刘国栋[1] ZHAO Jun-Nan;WANG Hui-Ning;GE Chao-Qiang;LIU Guo-Dong(School of Energy Science and Engineering Harbin Institute of Technology,Harbin 150001,China;Beijing Aerospace Propulsion Institute,Beijing 100076,China)

机构地区：[1]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001 [2]北京航天动力研究所,北京100076

出　　处：《节能技术》2020年第5期412-417,441,共7页Energy Conservation Technology

基　　金：国家重点研发计划子课题(2017YFB0602901-2)。

摘　　要：喷动流化床中,在床底部通入高速射流气体,由轴向射流在床内形成有规律的气-固两相流动,该技术在工业中有着广泛的应用。本文采用Euler-Euler双流体模型(TFM),对喷动流化床内的气固两相流动过程进行模拟。计算得出了不同喷动和流化速度下床内形成的流动结构形态。计算得到的床内颗粒浓度分布规律与实验数据吻合,并获得了不同高度上沿不同方向的速度分布,以及不同流化区域颗粒拟温度的分布规律。In a spout-fluid bed,high-speed jet gas is passed into the bottom of the bed,and the axial jet forms a regular gas-solid two-phase flow in the bed.This technology has a wide range of applications in industry.In this paper,the Euler-Euler two-fluid model(TFM)is used to simulate the gas-solid two-phase flow process in a spouted fluidized bed.The flow structure morphology formed in the bed under different spouting and fluidization speeds are calculated.The calculated particle concentration distribution in the bed is consistent with the experimental data,and the velocity distribution along different directions at different heights and the pseudo-temperature distribution of particles in different fluidized regions are obtained.

关 键 词：喷动流化床 数值模拟 双流体模型 气固两相流动 

分 类 号：TK011[动力工程及工程热物理]