농축 배수 확산 범위 분석을 위한 기초 해석모델 개발

Abstract

This study developed and evaluated preliminary numerical models to assess the diffusion of high？concentration brine under domestic marine conditions. Near？field behavior was first analyzed with Plume 2.0 (EPA CORMIX？based 1D), revealing momentum？dominated, rapidly diluted plumes at 0 psu, and negatively buoyant density currents at 70 psu that sink and spread along the seabed with lower local mixing efficiency. To capture complex 3D mixing, a detailed OPENFOAM v12 CFD model (continuity, Navier？Stokes, advection？diffusion, k？ω SST) was established, showing that effluent？dominant momentum enhances outlet shear and initial mixing, while ambient？current dominance drives downstream dilution via background turbulence. The framework confirms salinity and momentum balance as key drivers of initial trajectory and mixing, and demonstrates the necessity of 3D CFD for robust near field assessment of concentrated brine discharge.