Investigation of multi-dimensional computational models for calculating pollutant transport Page: 2 of 37
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DP-MS-80-13
A PERFORMANCE STUDY OF SOME HIGH ORDER ACCURATE
NUMERICAL MODELS FOR MESOSCALE POLLUTANT TRANSPORT*
Darrell W. Pepper
Roger E. Cooper
E. I. du Pont de Nemours & Co.
Savannah River Laboratory
Aiken, South Carolina 29808
ABSTRACT
A performance study of five numerical algorithms for
multidimensional advection-diffusion prediction on mesoscale grids
has been made. Test problems include transport of point and
distributed sources and a simulation of a continuous source with
analytical solutions available to assess relative accuracy. Model
predictions are also compared with actual measurements of Kr-85
emitted from the Savannah River Plant (SRP) from 1975 through 1977.
The particle-in-cell and second-moment algorithms, both of which
use subgrid resolution coupled with Lagrangian advection, exhibit
superior accuracy in modeling single source releases. For modeling
distributed sources, algorithms based on the pseudospectral and
finite element interpolation concepts exhibit improved accuracy on
practical discretizations.
* The information contained in this article was developed during
the course of work under Contract No. DE-AC09-76SR00001 with the
U.S. Department of Energy.
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Pepper, D. W.; Cooper, R. E. & Baker, A. J. Investigation of multi-dimensional computational models for calculating pollutant transport, article, January 1, 1980; Aiken, South Carolina. (https://digital.library.unt.edu/ark:/67531/metadc1068653/m1/2/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.