COMPORTAMENTO FLUIDODINÂMICO DA INTERFCE ÁGUA - AR: MODELAGEM E SIMULAÇÃO

Resumo

Pollution of watery regions such as rivers, lakes, and seas with contaminants that disperse in
water has been a major concern in society in recent times. The dispersion of the various contaminants
present in the aqueous regions is influenced by various parameters such as: water and air velocity.
Therefore, it is of fundamental importance to know the relation of these properties in the propagation
of these pollutants.The use of tools that employ numerical methods are applied to predict the
dispersion behavior of contaminants present in free surface flows. The purpose of this study was to
evaluate the influence of air currents on the water surface. In the proposed mathematical model the
Eulerian-Eulerian approach was adopted for the two - phase (air-water) flow assuming the free surface
model, standard k–ε turbulence model. The constant physicochemical properties were adopted.
Numerical simulations were performed using the Ansy CFXR commercial package, varying the values
of air velocity and height of the water level. The results of the simulations confirm that the behavior of
the water-air interface is affected by the variation of the air velocity quantity and the height of the
water level of the reservoir.