Flow conditioning modeling and application to particle method

This work comprises the development of a re-circulation boundary condition to simulate the flow around a cylinder using the Moving Particles Simulation (MPS). The recirculation boundary condition consists in the re-injection of the fluid particles that flows out the downstream boundary of the computational domain into the upstream boundary through the application of a periodic boundary condition, and a flow conditioner that comprises a region where the velocities of the fluid particles are gradually adjusted to a uniform flow by suppressing the velocity perturbations. The proposed recirculation boundary condition is applied to simulate the flow around a fixed cylinder and the vortex sheet formation process. The Strouhal Number x Reynolds Number diagram obtained using the MPS method show results close to those present in literature. For the laminar flow, the streamlines of MPS simulations show similarity with experimental results present in literature