Aerated flows are characterized by complex hydrodynamics and mass-transfer processes. As a Lagrangian method, smoothed particle hydrodynamics (SPH) has a significant advantage in tracking the air-water interface in turbulent flows. This paper presents the application of an SPH method to investigate hydrodynamics and reaeration over stepped spillways. In the SPH method, the entrainment of dissolved oxygen (DO) is studied using a multiphase mass transfer SPH method for reaeration. The numerical results are compared with the hydrodynamics data from Chanson and DO data from Cheng. The simulation results show that velocity distribution and the location of free-surface aeration inception agree with the experimental results. Compared with the experimental results, the distribution of DO concentration over the stepped spillway is consistent with the measurement results. The study shows that the two-phase DO mass transfer SPH model is reliable and reasonable for simulating the hydrodynamics characteristics and reaeration process.

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chanson multiphase mass transfer sph method for reaeration tracking the airwater interface in turbulent flows lagrangian method smoothed particle hydrodynamics sph entrainment of dissolved oxygen do do concentration hydrodynamics data velocity distribution the hydrodynamics characteristics and reaeration process stepped spillway cheng flows location of freesurface aeration inception

Hang Wan,Ran Li,Carlo Gualtieri,Huixia Yang,Jingjie Feng,.Numerical Simulation of Hydrodynamics and Reaeration over a Stepped Spillway by the SPH Method. 9 (8),.

Hang Wan,Ran Li,Carlo Gualtieri,Huixia Yang,Jingjie Feng,"Numerical Simulation of Hydrodynamics and Reaeration over a Stepped Spillway by the SPH Method" 9

Hang Wan,Ran Li,Carlo Gualtieri,Huixia Yang,Jingjie Feng,"Numerical Simulation of Hydrodynamics and Reaeration over a Stepped Spillway by the SPH Method"