The activated corrosion product is major source of the collective effective dose in the maintenance and repair work of PWR, and various mechanistic models have been developed to evaluate its formation, transportation, and deposition process. Among the physical process of particulate corrosion product, deposition is a key issue that directly affects the amount of radioactive nuclide on the pipe of reactor coolant system, which serves as radioactive “source term”. In this study, a three dimensional two phase CFD simulation is carried out to evaluate the particle transportation and deposition process. The particles are tracked in a Lagrangian framework. In addition to the forces exerted on the particle from fluid, particle–wall interaction is particularly considered in the simulation. Dunn’s model is chosen to determine whether the particle is bounced or adhered after particle–wall collision. Finally, the deposition rate of particulate corrosion product is statistically evaluated for different geometry shape, flow velocity.