Dossier Océan et énergie - Énergie Thermique des Mers
Sommaire IOA News Letters
NUMERICAL ANALYSIS OF THE BEHAVIOR OF THE TURBULENT JET DISCHARGED FROM THE OTEC POWER PLANT
Ki Cheol Kim, Dong-A University - Korea; and
Haruo Uchara, Saga University - Japan
The behavior of turbulent buoyant jet discharged from the OTEC power plant is analyzed by solving non-dimensional vorticity-streamfunction and diffusion equations. Non-dimensional parameters such as Reynolds number, Schmidt number and Froude number which characterize the behavior of jet are obtained. Several analysis are conduted in which these parameters are varied.
Density currents is formed near
the source by the density difference between the jet and the ambient fluid and
intrudes into the ambient fluids. Strong positive vorticity is formed
along the line from the source and strong upward motion is observed near the
source by buoyancy force according to density difference. As Schmidt
number increase, the motion of the jet along the direction from the source is
suppressed. As the source flex increase, the vorticity is reduced but the
isopyonic lines develope more in the vertical direction. As density difference
between the jet
and the ambient fluids increase, the stronger vorticity is generated by the baroclinic production of vorticity and this stronger vorticity disturbes the propagation of the jet.