Numerical Solution of 2-D Pollutant Distribution Model Based on Advection-Diffusion Mechanism in Waste Stabilization Ponds
This paper presents solution of Biochemical Oxygen Demand (BOD) concentration distribution model in waste stabilization ponds on the surface (2-D) based on the advection-diffusion mechanism of some cases. This model is represented in second-order partial differential equations. The purpose of this paper is investigate the BOD distribution design in waste stabilization ponds of some cases. One of the numerical methods that can be used to solve the model in the form of partial differential equations are finite difference method. Finite difference method consists of several schemes. The scheme is expected to provide good results is a Forward Time Central Space scheme. The initial step in this method is the process of discretization using finite difference forward to derivative of time and finite difference central to derivative of space. The discrete equation will be substituted into the partial differential equations. The results show that a decrease in the concentration of BOD every time caused by the movement of pollutants (advection and diffusion). It can be seen from the numerical simulation of all cases.
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Document Type: Research Article
Affiliations: Department of Mathematics, Faculty of Science and Mathematics, Diponegoro University, Semarang 50275, Indonesia
Publication date: 01 July 2017
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