二维流化床内水平射流影响区试验研究  

Study of the Jet-influenced Area of a Horizontal Jet in Two-dimensional Fluidized Beds

作　　者：周亚明 沈湘林[2] 刘海滨 

机构地区：[1]上海焦化有限公司,上海200241 [2]东南大学热能工程研究所,南京210096 [3]明维自动化有限公司,南京210008

出　　处：《燃烧科学与技术》2000年第4期326-330,共5页Journal of Combustion Science and Technology

基　　金：高等学校博士学科点专项科研基金资助项目! (RFDP;952 860 4 )

摘　　要：提出了射流影响区的概念 ,利用图像处理方法和统计方法研究了二维流化床内水平射流在射流影响区出现的概率。射流在射流影响区中间出现的概率较大 ,在两侧出现的概率较小 ,且最大概率点随高度的增加向远离喷嘴的方向发展。研究了流化数和射流气体速度对射流区范围的影响 ,当流化数和射流气体速度增加时 ,射流影响区的范围将扩大。当射流气体速度较大时 ,气泡运动对射流影响区范围的影响减弱。WT5”BZ]A concept of jet influenced area is presented.The probability of the presence of jet in a jet influenced area is studied by means of image processing and statistical method.The probability of presence of the jet in the middle of the jet influenced area is high,but the probability is low on the both sides of the jet influenced area.The locations of the maximum probability extends outward with the height.The effects of the fluidization number and jet velocity on the jet influenced area are investigated.With the increase in fluidizatioin number and jet velocity,the jet influenced area expands.The influences of bubbles decrease with jet velocity.The regression of the experimental data yields the correlation of probabilistic centreline of the jet influenced area. [WT5”HZ]

关 键 词：水平射流 二维流化床 射流影响区 试验 

分 类 号：TQ051.13[化学工程]