ON THE MIXING FLOW STRUCTURE OF A TURBULENT CROSS JET

An experimental study on the structure of a turbulent cross jet mixing flow is presented. Diffusion rates, two and three dimensional flow st ructures, mean velocities, turbulence intensities and turbulent shear stresses of the mixing flow were measured as varying the velocity rati o. Self-similar forms for the dimensionless mean velocity and turbulen t shear stress profiles were found, particularly a semi-empirical curv e for the turbulent shear stresses was obtained by correlating the mea surement data resulting a remarkable agreement. It was found that the deviation gradient(alpha) is linearly correlated with the velocity rat io(R), and the cross section of the mixing flow is an elliptic form.