Abstract
A circular turbulent long jet has been assessed numerically using the volume-of-fluid method to examine the hydrodynamics of a long jet before impingement and to inspect the flow structure of a radial thin layer spreading over a flat plate after impingement. Typical steel mill industrial parameters are used in the model. Comparative results are shown for laminar and turbulent jets with different turbulence models. Model results showed good agreement with the analytical solution available for global parameters and jet behaviour. The film thickness of the water layer over the plate, for more than 27 jet diameter, was measured by tracking free-surface. A hydraulic jump was detected and occurred within the radial zone in different shapes in laminar and turbulent modelling, respectively.
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