带扰流孔波纹板的传热和阻力特性  

Heat transfer and resistance characteristics of corrugated plate with spoiler holes

作　　者：黄风良 孙志坚[1] 李鹏程[1] 顾金芳 胡亚才[1] 

机构地区：[1]浙江大学热工与动力系统研究所,浙江杭州310027 [2]浙江开尔新材料科技股份有限公司,浙江金华321031

出　　处：《浙江大学学报（工学版）》2015年第7期1242-1248,共7页Journal of Zhejiang University：Engineering Science

基　　金：金华市科学技术研究计划重点资助项目(20131031)

摘　　要：通过数值模拟方法分析DU-1(双皱纹型)波纹板通道内不同Re数下的温度场、速度场以及压力场,提出在DU-1板上开圆形扰流孔以增强传热效果.针对波纹通道内波纹板和定位板与空气层传热接触面积的不同,拓展了单吹技术数学模型.考虑扰流孔孔径、间距、位置以及排列方式4种影响因素,利用正交实验法对开扰流孔后DU-1板的传热和阻力特性进行系统研究,分析4种因素的影响规律.利用综合平衡分析法得出提高DU-1板传热效果和降低流动阻力的最佳水平组合.通过试验验证发现,该带扰流孔DU-1波纹板相对于无扰流孔时传热特性增加19.87%,流动阻力减少24.53%.The temperature fields,velocity fields and pressure fields in the passage of double corrugated（DU）-1plate at different Re were simulated through the simulation.The simulation round spoiler holes was proposed to enhance heat transfer of DU-1plate.The mathematical model of single blow technology（STB）was developed according to the difference of heat transfer area of positioning plate and corrugated plate with air in the passage.Considering diameter,spacing,position and arrangement of the round holes,orthogonal experiments which could considerably increase experiment efficiency were conducted to determine the experimental plate models.The overall mean heat transfer coefficients and friction factors were measured through single blow technology experiments.The influence of four factors to heat transfer and resistance characteristics of DU-1 with round holes was discussed through the analysis of experimental results.The best combination of the four factors which could enhance heat transfer and reduce flow resistance to the best of DU-1was raised through consolidated balance analysis.The DU-1plate has 19.87%increase in heat transfer and 24.53%reduction in flow resistance compared with DU-1without round holes.

关 键 词：回转式空预器 波纹板 扰流孔 单吹技术(STB) 传热和阻力特性 

分 类 号：TK124[动力工程及工程热物理—工程热物理]