Author(s): Hua Zhang; Raouf E. Baddour

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Keywords: No Keywords

Abstract: Non-linear thermal mixing is well-known to dominate thermal discharges at low temperatures. Non-linear thermal-saline mixing is more complicated and not fully understood. A non-linear thermal-saline mixing equation was formulated based on the properties of the equation of state for sea water. This equation shows that reversal of buoyancy may occur at both low and high temperature conditions. The zero density condition divided the reversing buoyancy field into positive and negative buoyancy regions. An experiment for jets with reversing buoyancy confirmed that non-linear mixing has a significant effect on the flow by changing the direction of local buoyancy force. The frontal penetration of vertical jets with reversing buoyancy was found to gradually increase with time. This observation suggests that new models are needed to investigate the unsteady behaviour of jets with reversing buoyancy.

DOI:

Year: 1997