LI Xiao-ying, LI Yan-bing, MA Bing-he, et al. Research on calibration of micro hot-film sensor for underwater wall shear stress measurement[J]. 2014, 33(10): 11-13+16.
LI Xiao-ying, LI Yan-bing, MA Bing-he, et al. Research on calibration of micro hot-film sensor for underwater wall shear stress measurement[J]. 2014, 33(10): 11-13+16. DOI: 10.13873/J.1000-9787(2014)10-0011-03.
微型热膜传感器的水下壁面剪应力标定研究
摘要
针对水下壁面剪应力的测量需求
建立了恒流模式下微型热膜传感器的剪应力测量与标定的数学模型
设计采用了扁薄矩形水槽剪应力发生装置
并在0
5
Pa范围内对传感器进行了测量标定实验。实验结果验证了测量与标定模型的正确性
标定实验的确定系数均超过了0.995
均方差保持在10-4量级
呈现良好的重复性与一致性
为水下壁面剪应力的测量应用奠定了重要基础。
Abstract
Aiming at measurement requirement for underwater wall shear stress
mathematical model for shear stress measurement and calibration in CC mode for micro thermal sensor is built
a flat thin rectangular water tunnel shear stress generation device is designed and used
measurement and calibration experiments are performed at range of 0
5 Pa.Experimental results validate correctness of measurement and calibration model
coefficient of determination of calibration experiment exceeds 0.995
RMSE is kept on the order of 10-4
which indicates good repeatability and consistency
laying foundation for underwater wall shear stress measurement application.