Three-Dimensional Water-Quality Simulation for River Based on VOF Method

• Published in: Transactions of Tianjin University Vol. 22; no. 5; pp. 426 - 433
• Main Author: 敖雪菲;王晓玲;宋明瑞;邓韶辉;李松敏
• Format: Journal Article
• Language: English
• Published: Tianjin Tianjin University 01.10.2016; Springer Nature B.V
• Subjects: Ammonia; Centrifugal force; computational; dynamics; Engineering; Environmental quality; fluid; Fluid flow; Humanities and Social Sciences; k-ε; mathematical; Mathematical models; Mechanical Engineering; method; model;river; multidisciplinary; quality; Science; Surface water; three-dimensional; turbulence; volume; water; Water quality; three-dimensional water quality model; volume of fluid method; river water quality; computational fluid dynamics; -; turbulence mathematical model; k-ε turbulence mathematical model
• ISSN: 1006-4982; 1995-8196
• DOI: 10.1007/s12209-016-2732-9

In the present study, considering the transport and transformation processes of variables, a threedimensional water quality model for the river system was established, which coupled the volume of fluid (VOF) method with the k-ε turbulence mathematical model. Then, the water hydrodynamic characteristics and transport processes for BOD5, NH3-N and TP were analyzed. The results showed that the water surface of convex bank was a little lower than that of concave bank due to the centrifugal force near the bend, and most concentrations were inferior to the type Ⅴ standard indexes of surface water environmental quality. The model validation indicated that the errors between the simulated and monitored values were comparatively small, satisfying the application demands and providing scientific basis and decision support for the restoration and protection of water quality.