Abstract
It is known that the bubbles dynamics are very important and dominant property in multiphase airlift systems. The major benefit came from understanding visually and numerically these dynamics that lead to improvement of bubbles distribution and a well-mixed mixture inside reactors. Hence, Euler-Lagrange approach has been used to study bubbles dynamics. By using the two-dimensional Reynolds-averaged Navier–Stokes equations that reinforces turbulence model the continuous phase velocity is calculated. The coupling between the phases was take into consideration through source terms of momentum and the source terms in the equations (ε and k), which include the effect of wake-generated turbulence by means consistent Lagrangian-similar terms. by utilizing the motion equations taking into account added mass, drag, pressure, gravity, wall, and the transverse lift force the Bubble motion was calculated. So as to determine the importance relative for the different physical phenomena’s included in the model., a modified particle source in cell (PIC) is introduced, where the effect of bubble is accounted not only where the center of bubble is located but also to all the cells that containing bubble.
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