Abstract
A bubbling wall jet was generated along a vertical flat plate with different wettability by using a single-hole nozzle. Water flow characteristics in the jet were measured with a laser Doppler velocimeter. Effects of the wettability of the plate emerged on the water flow characteristics primarily in the momentum region near the nozzle tip where the inertia force of injected gas governed the flow field. In the buoyancy region located above the momentum region, the horizontal distributions of the vertical mean velocity and the root-mean-square value of the vertical turbulence component of water flow were hardly dependent on the wettability of the plate and followed their respective similar distributions.
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