Abstract
This paper presents a mathematical model to describe the general behaviors of the buoyant jets discharged into reversing crossflows which could be caused by tide or changes of wind direction. The present model is derived by integrating mass flux, momentum flux and density deficiency over the jet cross-section to satisfy the conservation equations. The resultant partial differential equations are with respect to one spatial coordinate and time coordinate, may be numerically integrated with the Runge-Kutta method. Low computational power and memory are required.
Several cases of computations of surface buoyant jets into reversing crossflows are performed and compared with experimental data. The result shows that the mathematical model is capable of describing the qualitative behaviors of buoyant jets into reversing crossflows.
