摘要
冲击射流是一个复杂的流动过程 ,它不仅与流体的种类、被冲击表面形态和喷嘴的结构形式有关 ,更与喷嘴的布置及从喷嘴喷出流体的Re数有关。通过建立多束平面射流的二维数学模型 ,利用SIMPLE算法计算了冲击换热表面的静压值 ,并分析了各种情况下的换热强度。数值模拟的结果表明 ,在多束平面射流条件下 ,Re=6 6 70～ 3990 0 ,L/B =4～ 6、H/B =5～ 7时 。
Impinging jet is a very complicated flowing process.It is relate to the distribution of nozzles and the Re number of fluid flow out of nozzles,as well as the kind of the fluid,the conditions of the surface and the structure of the nozzle.This article establishes a two dimensional mathematical model of multi clusters plane jets and using SIMPLE method to calculate the order of static pressure on the surface of impinging jet,and analyzes the specific race of heat flow.Experiments results from numerical simulation show that factors which affect heat transfer are relate to the number of Re,L/B and H/B,and it can get better result of impinging jet on condition of Re=6670～39900,L/B=4～6 and H/B=5～7.
出处
《冶金能源》
北大核心
2001年第6期42-45,共4页
Energy For Metallurgical Industry
