蜂窝断面内循环三相生物流化床内流动状况的数值模拟  

Numerical simulation of flow in inner-circulation three-phase biological fluidized bed with honeycomb cross section

作　　者：张玉魁 石桂芳[2] 施汉昌[3] 

机构地区：[1]北京市政投资有限公司,北京100083 [2]清华大学自动化系,北京100084 [3]清华大学环境科学与工程系,北京100084

出　　处：《环境污染与防治》2006年第11期807-810,共4页Environmental Pollution & Control

基　　金：国家"863"计划资助项目(No.2002AA601200)。

摘　　要：根据蜂窝断面内循环三相生物流化床内混合液的连续性方程、动量方程和能量方程,利用Fluent软件对反应器内的流动状况进行了数值模拟。采用Fluent的前处理软件Gambit完成流化床的三维模型,利用Fluent主程序解析计算,并利用后处理软件实现计算结果的显示。模拟计算结果获得了反应器内静压力、静压差的变化规律,得到了液体循环速度、气含率沿纵向及横断面的分布。Based on continuity equation, momentum equation and energy equation of mixture in inner-circulation three-phase biological fluidized bed （ITFB） with honeycomb cross section, software ＂Fluent＂ was used to simulate the flow in ITFB reactor. Fore treatment software ＂Gambit＂ was used to complete three-dimensional model of ITFB, main program was used to calculate, and after treatment program was used to display the result. Static press change and static press difference of downcomer and riser change in ITFB are obtained. Change rules of liquid circulation velocity and gas holdup in ITFB are obtained.

关 键 词：蜂窝断面 内循环三相生物流化床 数值模拟 静压差 液体循环速度 气含率 

分 类 号：X703[环境科学与工程—环境工程]