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Titolo:
An analytical model for simulating step-function injection in a radial geometry
Autore:
Tomasko, D; Williams, GP; Smith, K;
Indirizzi:
Argonne Natl Lab, Environm Assessment Div, Argonne, IL 60439 USA Argonne Natl Lab Argonne IL USA 60439 sessment Div, Argonne, IL 60439 USA
Titolo Testata:
MATHEMATICAL GEOLOGY
fascicolo: 2, volume: 33, anno: 2001,
pagine: 155 - 165
SICI:
0882-8121(200102)33:2<155:AAMFSS>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
NUMERICAL INVERSION; LAPLACE TRANSFORMS; DISPERSION PROBLEM;
Keywords:
radial injection; numerical Laplace inversion; Crump algorithm;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Williams, GP Argonne Natl Lab, Environm Assessment Div, 9700 S Cass Ave, Argonne, IL 60439 USA Argonne Natl Lab 9700 S Cass Ave Argonne IL USA 60439 439 USA
Citazione:
D. Tomasko et al., "An analytical model for simulating step-function injection in a radial geometry", MATH GEOL, 33(2), 2001, pp. 155-165

Abstract

An analytical model is developed for analyzing underground injection of wastes that undergo advection, dispersion, sorption, and first-order degradation. The model uses a time-dependent, step function source that simulates intermittent waste injection in a continuous fluid injection well. The governing equations for a cylindrically symmetrical system (ire cast in nondimensional form and then transformed and solved in Laplace,space. The Laplace space solution is inverted with the Crump algorithm, which uses the real andimaginary parts of a Fourier series. The numerical solution is verified byreplicating the step function source at the point of injection, and the behavior of the model is demonstrated in a series of figures. The model is recommended for quick. scoping calculations in which there is little site-specific information and periods of discontinuous radial injection.

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Documento generato il 06/08/20 alle ore 15:29:16