低雷诺数工况下锯齿型翅片性能的参数化研究  

Parametrical Research in Offset Strip Fin Performance at Low Reynolds Number

作　　者：郭丽华[1] 覃峰[1] 陈江平[1] 夏立峰 陈芝久[1] 

机构地区：[1]上海交通大学制冷与低温工程研究所 [2]浙江银轮机械股份有限公司

出　　处：《农业机械学报》2007年第7期168-171,167,共5页Transactions of the Chinese Society for Agricultural Machinery

摘　　要：基于田口方法,结合均匀设计法对低雷诺数工况下错列锯齿型翅片进行三维参数化数值研究。以单层翅片组件为测试对象,对6种试件的试验表明,仿真结果与试验数据的趋势吻合良好,而存在差异的主要原因是试件加工工艺引起翅片表面存在毛刺。按照均匀设计法得到6因子5水平的11种仿真方案,引入田口方法的信噪比和贡献率,研究各几何参数对翅片性能的影响程度,依次为齿距、齿高、齿型角、错齿距、齿开窗宽度和齿厚。根据各水平下各可控因子的信噪比分布得到翅片的优化模型,并通过仿真验证了优化模型的有效性。Based on Taguchi method and uniform design method, the three-dimensional numerical parametrical study of offset strip fins was conducted at low Reynolds number. Taken the single fin assembly as test section, the experimental data for 6 scheme fins were obtained, which have the same tendency with the corresponding simulated data. The difference between them is due to the existence of burrs on fin surface caused by manufacturing technology. According to uniform design, the 11 test schemes with 6 factors and 5 levels were yielded. And by adopting the signal to noise ratio and the contribution ratio originated from Taguchi method, the affecting degree of each geometrical parameter on fin performance was investigated. The sequence of effective factors is fin wavelength, fin height, fin angle, staggered fin wavelength, fin width and fin thickness. According to the signal to noise ratio distribution of each control factor at each level, the optimum model was obtained and confirmed validly by the simulation.

关 键 词：错列锯齿型翅片 性能 参数化仿真 低雷诺数工况 

分 类 号：TK124[动力工程及工程热物理—工程热物理] TK414.1[动力工程及工程热物理—热能工程]