Numerical investigation of the condensation of a rising bubble inside a subcooled liquid under magnetic field

In this study, the 3D numerical modeling of the condensation of a bubble inside subcooled liquid has been carried out under a uniform magnetic field and the effects of vertical and horizontal magnetic fields on the condensation behavior of the bubbles with initial diameters of 1.008 mm and 4 mm have been studied. The Tanasawa's mass transfer model was used to simulate the condensation process. The terms related to this model and energy equation have been implemented in OpenFOAM solver. The Maxwell equations, scalar magnetic potential equation, and the magnetic boundary conditions were also applied to the solver by coding. The volume of fluid (VOF) method has been used for capturing the interface of the phases. The obtained results show that the magnetic field stretches the bubble along the magnetic field lines. Besides, the magnetic field increases the pressure inside the bubble, which accelerates the condensation of the bubble in comparison with no magnetic field case. For the bubble with a smaller diameter, the vertical magnetic field contributes to faster condensation of the bubble, while for the bubble with a larger diameter, the bubble condenses and disappears faster in the presence of the magnetic field.