实验流体力学2025，Vol.39Issue(4)：19-27,9.DOI:10.11729/syltlx20240023
表面剪应力敏感膜传感技术及其低速风洞验证实验
Surface shear stress sensitive film sensing technology and its validation experiments in a low-speed wind tunnel
摘要
Abstract
A new surface shear stress sensitive film sensing technology was introduced,including the basic conceptual features,principles,technical approaches and the current development status at home and abroad.The main advantages of the surface shear stress sensitive film were analyzed,and the applications of the surface shear stress sensitive film were shown through typical cases in the water tunnel,low-speed wind tunnel and high-speed wind tunnel.We optimized the measurement method and data processing method of this technology,and carried out validation experiments of the homemade surface shear stress-sensitive film with a scaled-down model of the high-speed train in the 0.8 m×0.6 m low-speed wind tunnel of China Aerodynamic Research and Development Center.The cloud maps of surface shear stress distributions at several velocities were obtained,whose characteristics and repeatability were analyzed.The results show that the homemade simplified surface shear stress sensitive film,whose shear modulus is 1 224.82 Pa,can accurately measure the surface shear stress distribution in the local region,and the repeatability is better than 0.4%in the range of 3-13 Pa.The optimized surface shear stress sensitive film sensing technology is verified to have excellent stability and repeatability in a certain range.关键词
表面剪应力敏感膜/表面剪应力分布/低速风洞/重复性Key words
surface shear stress sensitive film/surface shear stress distribution/low-speed wind tunnel/repeatability分类
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冯文跃,陈爽,严来军,李斌成,周大唐,陈晓栋..表面剪应力敏感膜传感技术及其低速风洞验证实验[J].实验流体力学,2025,39(4):19-27,9.基金项目
国家重点研发计划项目(2020YFA0405700) （2020YFA0405700）
某试验鉴定技术研究项目(2022G02000420007) （2022G02000420007）
国家自然科学基金项目(52427809) （52427809）
