Smoothed particle hydrodynamics (SPH) simulation of impinging jet flows containing abrasive rigid bodies

摘要

A fully Lagrangian model for simulating impinging jet flows containing abrasive particles is established based on smoothed particle hydrodynamics (SPH) method. In the model, both the fluid and the solid are described by SPH, where the jet flow is modeled as the viscous fluid and the metallic target is modeled as the elastic-plastic material. The main novelty of the model is that abrasive particles are explicitly included in the jet flow and modeled as arbitrarily shaped rigid bodies. The interactions among the fluid, solid and abrasives are modeled through suitable techniques that are commonly used in SPH. The simulation of material removal caused by the impact of continuous abrasive-jet flow is conducted as a challenging example to verify the applicability of the model. This new model is attractive for relevant applications, such as solid particle erosion and abrasive water-jet machining. The advantages of the model lie in its conceptual simplicity, straightforward implementation and the relative ease of incorporating new physics.