Mass transfer from a sheared spherical rigid capsule

Solute mass transfer from a spherical fluid-filled rigid capsule subjected to shear flow is studied numerically, while considering unsteady, continuous and nonuniform boundary conditions on its surface. Here, the acts as reservoir with initially encapsulated solute concentration decaying over time. This scenario differs classical case study of either constant or flux at surface particle. The field are computed using fully three-dimensional lattice Boltzmann simulations, where fluid-structure two-way coupling achieved by immersed method. Effects efficacy quantified Sherwood number (the dimensionless coefficient), which found increase due combined effects forced convection local induced rotation capsule. Having continuity both significantly decreases compared uniform conditions. All obtained results can be applied heat in cooling an hot particle, for must replaced temperature Nusselt number.