Abstract

Effects of free and solid surface on round submerged water jets have been investigated experimentally. The jet is discharged parallel to a free and solid surface with an offset from each surface. Flow is visualized by using tracer particle method and the photograph obtained shows the present jets are classified into four types according to their behavior. Mean velocity of two kinds of flow, namely, the flow attaching to the free or solid surface is measured by a hot film anemometer. Characteristics of jets, such as the velocity profile, the decay and the location of maximum velocity, the half-value width and so on, are discussed on the strength of data. These results are also compared with the characteristics of free jet and the effects of both boundaries on the submerged water jets are clarified.

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