The measurement of reynolds stresses in low intensity turbulent flow

Abstract

Some of the fundamentals of hot wire anemometry are reviewed and given a new interpretation. Methods, employing either the inclined single sensor or the X-probe, are described for measuring all six components of the symmetric Reynolds stress tensor in flows where both the mean secondary velocities and the r.m.s, turbulence fluctuations are less than about 5 per cent of the primary velocity. Various methods are compared and general rules established for obtaining high accuracy.