Design Approach:

For multi-phase modeling, there are two approaches for the numerical calculation: the Euler-Lagrange approach and the Euler-Euler approach. In this study for design of internals in the Water balance tank, Euler-Lagrange approach is employed, since the dispersed secondary phase volume fraction is very low. The simulation uses Euler- Lagrange approach to model oil droplets. The oil droplet trajectories are computed individually at specified intervals during the water phase calculation.

Conclusion:

It is observed, flow inside the tank makes a circular pattern where flow velocities are higher at periphery of tank and velocities reduce as flow moves radially towards center of the tank. This kind of flow pattern increases the residence time of oil particles inside the tank, hence improving the flow separation efficiency of the tank. The size of nozzles, orientation and other internals are sufficient to meet design guarantee for the Skim Tank.