绕轴旋转圆柱结冰特性结冰风洞试验  

An icing wind tunnel test on icing characteristics of cylinder rotating around a shaft

作　　者：李岩[1] 王绍龙[1] 易贤[2] 周志宏[2] 郭龙[2] 

机构地区：[1]东北农业大学工程学院,哈尔滨150030 [2]中国空气动力研究与发展中心空气动力学国家重点试验室,绵阳621000

出　　处：《航空学报》2017年第2期111-121,共11页Acta Aeronautica et Astronautica Sinica

基　　金：国家自然科学基金(51576037;11172314);国家"973"计划(2015CB755800)~~

摘　　要：绕轴旋转物体结冰是一种常见的结冰现象,如风力机叶片和直升机旋翼结冰等。针对该旋转模型的结冰问题,以绕轴旋转圆柱为对象,进行了结冰风洞试验研究。试验在自行设计的利用自然低温的结冰风洞系统中完成。在对结冰风洞试验能力进行验证后,对具有不同直径、转速和结冰时间的旋转圆柱结冰进行了试验,建立了旋转圆柱的结冰分析与评价方法,分析了转速、圆柱直径、结冰时间等对圆柱结冰形状主要特征量的影响规律,包括结冰面积、无因次结冰面积、驻点厚度、无因次驻点厚度、驻点偏转角、无因次结冰上下极限等,获得了旋转圆柱的结冰特性。在此基础上,通过回归正交试验设计,构建了旋转圆柱结冰的预测模型,并进行了验证与分析。研究结果可为绕轴旋转物体结冰特性研究提供参考和借鉴。Icing on the objects rotating around a shaft is a common phenomenon,such as icing on wind turbine blade and helicopter propeller.In order to investigate the icing characteristics of the rotating model,icing wind tunnel tests are carried out on the cylinder rotating around a shaft.Tests are performed in the icing wind tunnel system with natural low temperature in cold climate.The repeatability validation test is made for the icing on rotating cylinder.Icing tests are carried out on the rotating cylinder with different rotating speed,cylinder diameter and icing time.Analysis and evaluation methods for the icing characteristics of the rotating cylinder are established.The effects of these factors on the characteristics of icing shape on rotation cylinder are explored,including icing area,dimensionless ice area,stagnation thickness,dimensionless stagnation thickness,stagnation point deflection angle,and dimensionless icing upper and lower limits.The icing characteristics of the rotating cylinder are obtained.Based on the above research,the regression equations for calculating the icing characteristics of rotating cylinder are obtained through orthogonal experimental design method,and the prediction model for the rotating cylinder is developed.Comparison and verification analysis of the test and the prediction values are carried out.The research results can provide reference for the study of icing characteristics on the object rotating around a shaft.

关 键 词：结冰 旋转圆柱 结冰风洞试验 结冰特性 回归分析 

分 类 号：V211.73[航空宇航科学与技术—航空宇航推进理论与工程]