Dynamics of the impingement region of a circular turbulent jet

The size and the movement of the impingement region were observed to increase linearly with the standoff distance of the nozzle. The size of the impingement region was independent of the fluid velocity at the nozzle. The movement of the impingement region was correlated to the fluid velocity when the impingement surface was near the nozzle (H/D = 2.5) and independent of the fluid velocity when the surface was farthest from the nozzle (H/D = 8.5).