叶栅风洞与试验雷诺数计算方法分析及应用  

The calculation and application of Reynolds number in cascade wind tunnel and experiment

作　　者：倪明 魏佐君 姜正礼 吴帅 任光明 甘晓华 NI Ming;WEI Zuojun;JIANG Zhengli;WU Shuai;REN Guangming;GAN Xiaohua(Department of Mechanics and Aerospace Engineering,College of Engineering,Southern University of Science and Technology,Shenzhen 518055,China;Shenzhen Key Laboratory of Wide-Speed-Range and Variable-Density Continuous Wind Tunnel,Southern University of Science and Technology,Shenzhen 518055,China;AECC Sichuan Gas Turbine Establishment,Mianyang 621000,China;China United Gas Turbine Technology Co.,Ltd.,Beijing 100016,China)

机构地区：[1]南方科技大学工学院力学与航空航天工程系,广东深圳518055 [2]南方科技大学深圳市宽速域变密度连续式风洞重点实验室,广东深圳518055 [3]中国航发四川燃气涡轮研究院,四川绵阳621000 [4]中国联合重型燃气轮机技术有限公司,北京100016

出　　处：《燃气涡轮试验与研究》2024年第6期24-30,共7页Gas Turbine Experiment and Research

基　　金：深圳市基础研究重点项目(JCYJ20200109141403840);国家自然科学基金青年科学基金项目(52106045);深圳市重点实验室筹建启动项目(ZDSYS20220527171405012)。

摘　　要：通过比较不同黏度计算方法,基于黏度指数法和萨特兰法,详细推导了叶栅试验中雷诺数的计算公式,得到了特征参数间数量级关系和特征雷诺数随马赫数变化的规律。建议将单位特征长度雷诺数(Re/L)作为通用性的风洞雷诺数特征参数。最后提出一种基于展弦比、雷诺数和风口高度约束的叶栅模化尺寸与叶片数量确认方法。研究给出的叶栅风洞试验的雷诺数计算方法具有工程可接受的误差范围,并在风洞建设、叶栅试验与模化设计领域有重要的参考价值。The calculation formula of the Reynolds number in cascade testing was derived in detail using different viscosity calculation methods,including the index method and the Sutherland method.The relationship between characteristic parameters and the law of characteristic Reynolds number changing with Mach number was obtained.The Reynolds number per unit length(Re/L)was suggested to be used as a universal characteristic parameter of wind tunnel Reynolds number.Finally,a method to confirm the modular size of a cascade and blade number based on the constraints of aspect ratio,Reynolds number,and vent height was proposed.The error range of Reynolds number calculation method of the cascade wind tunnel test is acceptable in engineering.And the method has important reference value in the fields of wind tunnel construction,cascade experiment,and modular design.

关 键 词：叶栅风洞 叶栅试验 雷诺数 黏度计算 模化设计 

分 类 号：V211.7[航空宇航科学与技术—航空宇航推进理论与工程]