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Numerical Simulation for Near Field-Behavior of Wastewater Discharged into Stagnant Ambient in Coastal Region  

Kwon, Seok-Jae (Division of Civil, Urban & Geosystem Engineering, Seoul National University)
Seo, Il-Won (Division of Civil, Urban & Geosystem Engineering, Seoul National University)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.17, no.3, 2005 , pp. 166-177 More about this Journal
Abstract
This study developed the jet integral model to analyze the behavior of the wastewater discharge in the near field using the fourth order Runge-Kutta method in order to numerically solve the problems of six ordinary differential equations and six unknowns. This jet integral model used the entrainment hypothesis and the manipulation of sonle shape constant. This study also conducted the hydraulic experiments fnr single horizontal buoyant Jet using LIF through the calibration procedure. The results calculated by the previous models, CORMIX 1 and VISJET, and the proposed jet integral model were compared to the hydraulic experimental results. The centerline trajectories predicted by the proposed model were in good agreements with the experimental results in the transition region whereas the trajectories calculated by the VISJET model agreed well with the measured data in the momentum and buoyancy-dominated regions. The centerline dilution calculated by the proposed model agreed generally with the measured dilution in the intial and transition regions while the centerline dilution predicted by the CORMIX 1 was in good agreements with the experimental results in the momentum and buoyancy-dominated regions.
Keywords
wastewater; jet integral model; LIF; single horizontal buoyant jet; centerline trajectory; centerline dilution;
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