Simultaneous measurement of concentration and velocity by applying hot-wire techniques. (2nd Report. An illustration and experiment in the turbulent mixing region).

Abstract

A method of simultaneously measuring concentration and velocity in the mixing region of two different gases was illustrated in the 1st report. Calibration for each probe becomes important for the analysis. The actual measurements are carried out in the turbulent region formed by axisymmetric jets issuing six kinds of different gases of varying densities. The results of the experiment give some new conclusions concerning the characteristics of the free jet. The present paper deals with the axial decays of concentration and velocity through examination of the mean and fluctuating values.