Study of mixing in an axisymmetric coflowing liquid jet by coupling LDA toan electrochemical method

Local and simultaneous velocity and concentration fluctuations were analyse d in an axisymmetric jet of an aqueous electrolyte solution moving in a cod irectional water stream. The determination of the convection velocity of th e turbulent eddies as well as correlation between axial velocity and concen tration fluctuations was made possible by coupling L.D.A. to an electrochem ical technique. The influence of the ratio of the coflowing stream velocity to the jet exit velocity was investigated. The mean velocity and concentra tion profiles, the turbulence intensity, the integral length scales relativ e to axial velocity and concentration were also determined.