摘要
本文从分析近壁区纵向流速垂线分布入手,给出了均匀加糙床面上切力量测的普雷斯顿管标定图及数学表达式。实验验证表明,该成果能够给出令人比较满意的结果。
Based on the velocity distribution for turbulent flow, this paper presents a calibration chart and equations for the Preston tube for the measurement of shear stress on approximately rough boundaries. The calibration curves have been compared with the existing data in the literature. Satisfac tory results have been obtained.
基金
国家自然科学基金
关键词
普雷斯顿管
紊流
切力
水力粗糙面
preston tube, shear stress, calibration chart, rough surface
