Do the Volume-of-Fluid and the Two-Phase Euler Compete for Modeling a Spillway Aerator?

Spillway design is key to the effective and safe operation of dams. Typically, flow characterized by high velocity, levels turbulence, aeration. In last two decades, advances in computational fluid dynamics (CFD) made available several numerical tools aid hydraulic structures engineers. The most frequent approach solve Reynolds-averaged Navier–Stokes equations using an Euler type model combined with volume-of-fluid (VoF) method. Regardless a few applications, complete two-phase still considered demand exorbitant resources. An assessment performed spillway offset aerator, comparing (TPVoF) (CTPE). Both models are included OpenFOAM® toolbox. As expected, TPVoF results depend highly on mesh, not showing convergence maximum chute bottom pressure lower-nappe aeration, tending null aeration as resolution increases. CTPE k–? SST Sato turbulence exhibits accurate mesh Surprisingly, intermediate resolutions sufficient surpass performance reasonable calculation efforts. Moreover, compressibility, bulking, entrained air effects comprehended. Despite reproducing all aspects acceptable accuracy, demonstrated efficient cost-benefit value aerated flows. Nonetheless, further developments expected enhance efficiency stability this model.