边界层转捩测量的实验研究

An Experimental Investigation of the Measuring Methods of Boundary-Layer Transition

本文通过实验,研究了边界层转捩测量的一些方法和技术,表明随机信号的均方根值在转捩过程中变化率较大,指示明确稳定,是测量转捩较准确有效的一种方法。本文同时还研究了气流湍流度对测量方法的影响,最后提出转捩测量技术尚需进一步研讨的问题。

This paper describes the investigating results on experimental techniques of indicating boundary-layer transition, and indicates that the level of r.m.s. of random signal is more effective for the transition detection. Meanwhile, the stream turbulence effects on the measurement are studied. Finally, the problems which must be researched further are presented for indicating boundary-layer transition.