THERMAL SCIENCE

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Svetislav Savović

,

Alexandar Djordjevich

EXPLICIT FINITE DIFFERENCE SOLUTION FOR CONTAMINANT TRANSPORT PROBLEMS WITH CONSTANT AND OSCILLATING BOUNDARY CONDITIONS

ABSTRACT
For constant and oscillating boundary conditions, the 1-D advection-diffusion equation with constant coefficients, which describes a contaminant flow, is solved by the explicit finite difference method in a semi-infinite medium. It is shown how far the periodicity of the oscillating boundary carries on until diminishing to below appreciable levels a specified distance away, which depends on the oscillation characteristics of the source. Results are tested against an analytical solution reported for a special case. The explicit finite difference method is shown to be effective for solving the advection-diffusion equation with constant coefficients in semi-infinite media with constant and oscillating boundary conditions. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. 171011]
KEYWORDS
advection-diffusion equation, contaminant flow, finite difference method, oscillating boundary conditions
PAPER SUBMITTED: 2019-07-22
PAPER REVISED: 2019-10-04
PAPER ACCEPTED: 2019-10-07
PUBLISHED ONLINE: 2019-11-17
DOI REFERENCE: https://doi.org/10.2298/TSCI190722422S
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2020, VOLUME 24, ISSUE Issue 3, PAGES [2225 - 2231]
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Explicit finite difference solution for contaminant transport problems with constant and oscillating boundary conditions

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