肋参数对复合肋套管流动和换热的影响  

Influence of fin parameters on the flow and heat transfer in the concentric tube with longitudinal fins

作　　者：郭海生[1] 杨茉[1] 刘明会[1] 单彦广[1] 卢玫[1] 余敏[1] 

机构地区：[1]上海理工大学动力工程学院,上海200093

出　　处：《能源研究与信息》2007年第3期165-171,共7页Energy Research and Information

摘　　要：同心复合套管式回热器是微型燃气轮机的重要部件—紧凑式回热器的一种类型。采用Fluent对有交错肋的同心套管中的对流与换热进行了数值模拟。结果表明:在给定的边界条件下,肋的一些参数,比如冷、热流体通道内的肋之间的夹角,肋片的导热系数和管长会对Nu数产生影响,但夹角的变化对摩擦系数几乎没影响。The concentric-tube recuperator with longitudinal fins is an importance part of the gas turbine-a type of compact recuperators. Numerical simulations were made for the flow and heat transfer of the concentric tube with interlaced fins. As a result, some fin parameter of the （the included angle between fins in cold and heat fluid, coefficient of heat conductivity of fins, and length of the tube） may, at given boundary conditions, affect the Nusselt number. But the change of included angle does affect the friction coefficient. The numerical simulations in this paper were done by the software of Fluent, and the numerical method is SIMPLE.

关 键 词：复合肋套管 肋参数 数值模拟 

分 类 号：TK471[动力工程及工程热物理—动力机械及工程]