Flow visualization and preliminary measurements of a confined jet with and without target

Flow visualization using smoke in a confined jet with and without a target has been investigated in the paper. The results indicated that there are flow oscillations in the confined jet with and without the target. The results also confirm the existence of re-circulation flow when the flow hit the back wall and causing the mean velocity profiles did not reach the zero values at the far end of transverse locations. The flow visualization provides useful qualitative information about the flow physic of the fluidic flowmeter.