According to the jet theory and the characteristics of the flow , the flow can be divided into 6 zones : supersonic core zone , supersonic mixing zone , subsonic mixing zone , secondary flow zone and expanding zone . the rules to distinguish these zones were established . 2 根据射流理论及引射流动特点,将引射流场结构划分为超声速核心区、超声速混合区、亚声速混合区、支板背壁回流区、二次流流动区以及发动机后部膨胀区,并确定了各区域准确划分的原则。
Abstract : in the internal circulating fluidized bed , there exist the moving zone , fluidizing zone and heat transferring zone with different fluidized air velocities . the convection heat transfer coefficient of immersed tube in the heat transferring zone is impacted by the velocity of the moving zone nearby and its data and change trend are obviously different with those of the common bubbling bed . the maximum heat transfer coefficient is evidently higher than that of the bubbling bed . as the bed materials have not been fluidized in the heat transfer zone , the coefficient has increased highly . the curve of that changes gently , feasilble to control the combustion intensity in the fluidizing zone 文摘:垃圾焚烧系统中,内旋流流化床存在不同布风速度的移动区、流动区和换热区,处于换热区的埋管的对流换热系数受附近流动区气流参数的影响,其变化趋势及数值大小与普通鼓泡型流化床之间有明显不同:最大的对流换热系数明显高于鼓泡床;换热区尚未流化时,对流换热系数已经大幅提高;整条换热曲线的变化比较平缓,易于流化床浓相床内换热。
流动: ent] population; floating pe ...区: H region; H流动区域: flow region橡胶态流动区: rubbery flow zone土的塑性流动区: zone of plastic flow of soil; zone of plastic flow of the soil动区: livestock farm正交流动区域精炼炉: crossflow zone refiner正交流动区域提纯器: cross-flow zone refiner纵横流动区域精炼炉: crossflow zone refiner侧端加料纵横流动区域精炼炉: end feed cross flow zone refiner; end-feed cross-flow zone refiner端部加料纵横流动区域精炼炉: end-feed cross-flow zone refiner根据地形而划分的空气和水体流动区域: natural air and water shed平行加料纵横流动区域精炼炉: parallel feed cross-flow refiner摆动区: hunting zone变动区: fluctuation belt波动区: wave zone浮动区: flying zone滑动区: slide area; slipping area活动区: active area; active pane; active regions; activity area; live zone; movement area机动区: manoeuvring area搅动区: agitation section; stirring section启动区: boot sector; initiating zone; promoter area; promotor; start zone; tri ed zone; tripped zone驱动区: driver zone扰动区: disturbance zone; disturbed area; zone of action松动区: loose zone