Numerical simulations of flow and contaminant transport using multiple depthaveraged two-equation turbulence models in the Solimões river near the Anamã city

Journal Title: Scientific Journal of Environmental Sciences - Year 2014, Vol 3, Issue 5

Abstract

This paper reports a quasi 3D numerical simulation in a curved river reach of the Solimões River near The Anamã City, Brazil, aiming to develop a numerical tool for modeling turbulent flows and pollutant transport in complex natural waters. The recently built depth-averaged two-equation turbulence model, together with and models were used to close non-simplified quasi 3D hydrodynamic fundamental governing equations. The discretized equations were solved by advanced multi-grid iterative method under non-orthogonal body-fitted coarse and fine two-levels’ grids with collocated variable arrangement. Except for steady flow and transport computation, the processes of contaminant inpouring and plume development, caused by the side-discharge from a tribytary, also have been investigated numerically. The used three closure approaches are suitable for modeling strong mixing turbulence. The established model with higher order of magnitude of transported variable provides a possibility to elevate the computational precision. Based on the developed hydrodynamic model, a CFD (Computational Fluid Dynamics) software, namely Q3drm1.0, was developed. This tool focuses on the refined simulations of the steady and unsteady problems of flow and temperature/contaminant transports in complicated computational domains with the strong ability to deal with different types of discharges: side-discharge, point-source discharge/point-sink, and area-source discharge from the slope along bank. In this paper, only the study of side-discharge is presented.

Authors and Affiliations

L. Yu| ESDV (Environmental Software and Digital Visualization), lirenyu@yahoo.com, Rm.302, Unit4, Building420, Wan- Sheng-Bei-Li, Ton-Zhou Dist., 101121, Beijing, CHINA.Researcher of ASSER-CESUSC, BRAZIL.

Keywords

Related Articles

Impact of spent engine oil on soil and the growth of Zea mays seeds

The impact of waste engine oil on soil and the growth of Zea mays seeds were investigated in this paper. Three concentrations of 500mL, 1000mL, and 1500mL waste engine oil applied to the soil affected the soil and growth...

The role of green energy systems and sustainable development

People are relying upon oil for primary energy and this will continue for a few more decades. Other conventional sources may be more enduring, but are not without serious disadvantages. The renewable energy resources are...

Synthesis of biodegradable cellulose-chitin polymer film using recycled N,N-dimethylacetamide

The current laboratory-scale synthesis of chitin-based bioplastics involves the immediate disposal of lithium chloride/N,N-dimethylacetamide (LiCl/DMAc) solvent after use, making the process wasteful, harmful to the envi...

Adsorptive removal of acid blue 15 dye (AB15) from aqueous solutions by red mud: characteristics, isotherm and kinetic studies

The dyes are one of the main environmental pollutants in various industrial wastewaters. In the present study, the adsorption potential of Red mud in a batch system for the removal of Acid blue 15 dye from aqueous solut...

Numerical simulations of flow and contaminant transport using multiple depthaveraged two-equation turbulence models in the Solimões river near the Anamã city

This paper reports a quasi 3D numerical simulation in a curved river reach of the Solimões River near The Anamã City, Brazil, aiming to develop a numerical tool for modeling turbulent flows and pollutant transport in com...

Download PDF file
  • EP ID EP1309
  • DOI 10.14196/ sjes.v3i5.1704
  • Views 443
  • Downloads 30

How To Cite

L. Yu (2014). Numerical simulations of flow and contaminant transport using multiple depthaveraged two-equation turbulence models in the Solimões river near the Anamã city. Scientific Journal of Environmental Sciences, 3(5), 36-48. https://europub.co.uk/articles/-A-1309