Reattachment Flow Issuing from a Finite Width Nozzle

It was found for reattachment jets having large offset ratios that an agreement if good between the experimental results and the results of the approximated calculations obtained by using the solutions of a two-dimensional jet. But flows having rather small offset ratios show different values from the results of calculation. Existence of similarity in the reattachment jet flows having large offset ratios can be well expressed by introducing an appropriate parameter which represents a bubble pressure. Experiments also show that the behaviours of a two-dimensional reattachment jet flow are independent of Reynolds number, but the behaviours of a reattachment jet flow are dependent on Reynolds number in the case of three-dimensional flows having small aspect ratios.