基于荧光油膜的全局表面摩阻测量技术研究

发布时间：2018-01-06 09:04

本文关键词：基于荧光油膜的全局表面摩阻测量技术研究　出处：《空气动力学学报》2016年03期 　论文类型：期刊论文

【摘要】：针对表面摩阻传统测量方法的单点性和间接性,探索了荧光油膜进行全局表面摩阻分布的直接测量方法。建立了表征荧光油膜厚度与表面摩阻之间关系的油膜控制方程,引入附加约束和积分最小化方法,采用变分迭代方法求解表面摩阻分布。研制了可用紫外光激发的荧光油膜,采用紫外光源和高分辨率CCD相机,建立荧光油膜表面摩阻测量硬件系统。针对特定的三角翼模型进行了表面摩阻分布测量实验,获得了高分辨率的表面摩阻分布和相对幅值分布,并与文献理论进行比较分析。实验结果与理论分析完全一致,表明了基于荧光油膜的全局表面摩阻测量技术的有效性。
[Abstract]:A direct measurement method for the global surface friction distribution of a fluorescent oil film has been explored for the single point and interconnectivity of the traditional measurement method of the surface friction resistance . An oil film control equation is established to characterize the relationship between the thickness of the fluorescent oil film and the surface friction resistance . An additional constraint and integral minimization method is used to solve the surface frictional resistance distribution . A surface friction measurement hardware system with high resolution is developed by using the variational iteration method . The experimental results are completely consistent with the theoretical analysis . The experimental results show the effectiveness of the global surface friction measurement technique based on the fluorescent oil film .

【作者单位】：中国航天空气动力技术研究院;上海飞机设计研究院;
【基金】：国家自然科学基金(11572304) 国家重点基础研究发展计划(2014CB744805)
【分类号】：V211.71
【正文快照】： 0引言表面摩阻是飞行器飞行时总阻力的重要组成部分,表面摩阻的测量对于湍流、边界层等的机理研究和减阻、热防护等工程问题研究具有重要意义和价值[1]。至今已发展了很多技术用来测量表面摩阻,典型的如:热线法[2]、热膜法[3]、Preston[4-5]管法、Stanton[6]管法、底层隔板法[

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