垃圾气体在集气井内垂向流动的数值模拟  

Numerical Simulation of the Vertical Flow of Landfill Gas in the Collecting Well

作　　者：卜长明[1] 冯国建[1] 唐静[2] 杨玉鹏[3] 唐宁 

机构地区：[1]重庆大学土木工程学院,重庆400045 [2]西南大学后勤集团,重庆400710 [3]重庆市农业科学院,重庆401329

出　　处：《西南大学学报（自然科学版）》2010年第9期153-156,共4页Journal of Southwest University(Natural Science Edition)

基　　金：重庆大学研究生科技创新基金(200811A1B0060295)

摘　　要：为了控制和利用垃圾气体,减小其对周围环境的威胁,采用数值模拟的方法,对不可压缩流体在紊流状态下的速度与压力分布情况进行分析比较.结果表明:垃圾气体的速度从收集井底部至顶部是逐渐增加的,至井的顶部,速度达到最大值;垃圾气体的压力分布与速度分布是相反的,在井的顶部,压力为最小值;由于穿孔被堵塞,穿孔处的压力比没有堵塞时要小60%.For controlling and utilizing the landfill gas and decreasing its threat to the environment,numerical simulation was adopted to analyze and compare the distribution of pressure and velocity of the incompressible fluid under the turbulence condition. The results showed that the landfill gas velocity increased gradually from the bottom to the top of the collecting well,with the maximum recorded at the top of the well and that the distribution of pressure was contrary to that of velocity,with the minimum recorded at the top of the well. Because the hole was jammed,the pressure at the jammed hole was 60% less than at the un-jammed hole.

关 键 词：垃圾气体 流动 数值模拟 压力 速度 

分 类 号：X701[环境科学与工程—环境工程]