|
چکیده
|
The current study involves conducting a two-dimensional numerical simulation to investigate the process of a single rising bubble condensation in a subcooled stagnant liquid under the effect of a magnetic field. To simulate the condensation phenomenon, the energy equation and Tanasawa mass transfer model, along with appropriate source terms, are incorporated into the OpenFOAM solver utilizing C++ coding. The surface tension between vapor-liquid phases is considered using the Continuous Surface Force (CSF) method, and the Volume of Fluid (VOF) model has been used to track the interface of the two phases. The numerical findings were initially compared to the experimental and numerical results, indicating good agreement. The numerical findings demonstrated that for a bubble with an initial diameter of 1.008mm, the tendency to deform from a spherical shape is negligible in the absence of a magnetic field, and it retains a nearly spherical shape while its size decreases. Furthermore, the magnetic field causes elongation of the bubble along the magnetic field lines. The smaller the diameter of the bubble (1.008mm), the faster the vertical magnetic field increases the condensation process. Conversely, for larger bubbles (4mm), the presence of the magnetic field causes them to condense and disappear more quickly.
|