Zobrazeno 1 - 10
of 12
pro vyhledávání: '"R. L. Naff"'
Autor:
R. L. Naff
Publikováno v:
Water Resources Research. 34:3693-3699
The late-time macrodispersion coefficients are obtained for the case of flow in the presence of a small-scale deterministic transient in a three-dimensional anisotropic, heterogeneous medium. The transient is assumed to affect only the velocity compo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b43e89ce01913b0ebf3d24c230367823
https://doi.org/10.1029/98wr02768
https://doi.org/10.1029/98wr02768
Publikováno v:
Water Resources Research. 34:679-697
In this, the second of two papers concerned with the use of numerical simulation to examine flow and transport parameters in heterogeneous porous media via Monte Carlo methods, results from the transport aspect of these simulations are reported on. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33f382dee23dc41290de90825e71f4ce
https://doi.org/10.1029/97wr02711
https://doi.org/10.1029/97wr02711
Autor:
R. L. Naff
Publikováno v:
Water Resources Research. 30:1439-1455
The moments of a conservative tracer cloud migrating in a mean uniform flow field are estimated using an operator approximation scheme; results are presented for the second, third, and fourth central moments in the mean flow direction. It is assumed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::520c9dd98c43c079c6b87544b8d6eb75
https://doi.org/10.1029/94wr00220
https://doi.org/10.1029/94wr00220
Publikováno v:
Water Resources Research. 30:791-815
The field-scale transport of reactive and nonreactive solutes by groundwater in a statistically anisotropic aquifer is examined by means of high-resolution, three-dimensional numerical solutions of the steady state flow and transient advection-disper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a6f3b32dc94b8bf60ec88ea36deee7e7
https://doi.org/10.1029/93wr02946
https://doi.org/10.1029/93wr02946
Autor:
R. L. Naff
Publikováno v:
Water Resources Research. 28:53-68
Using concepts developed in an earlier study, a solution in Laplace transform space is obtained for transport of resident concentration in an imperfectly but yet highly stratified porous medium. The flow field, into which an instantaneous pulse of tr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4d8976e96bda11332dbbd5a597eee911
https://doi.org/10.1029/91wr02105
https://doi.org/10.1029/91wr02105
Autor:
R. L. Naff
Publikováno v:
Water Resources Research. 27:307-316
A perturbation solution to three-dimensional radial flow in heterogeneous porous media is reported on; the analytical solution is in terms of the first and second moments of the gradient in the radial direction and the specific discharge in this dire
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::796617801d8defdf8096eb02d95b89da
https://doi.org/10.1029/90wr02410
https://doi.org/10.1029/90wr02410
Autor:
R. L. Naff
Publikováno v:
Water Resources Research. 26:1013-1026
A method is presented for evaluating the mean transport of a tracer in saturated heterogeneous porous media when the hydraulic conductivity can be represented by a stochastic process; no assumption concerning stationarity of the concentration field i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2a6dc64cb03cfe3a880d32aea5598683
https://doi.org/10.1029/wr026i005p01013
https://doi.org/10.1029/wr026i005p01013
Autor:
R. L. Naff, E. A. Sudicky
Publikováno v:
Water Resources Research. 31:1443-1444
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::494271dee78f93a6aa9361a109c107a9
https://doi.org/10.1029/95wr00091
https://doi.org/10.1029/95wr00091
Autor:
R. L. Naff, A. V. Vecchia
Publikováno v:
Water Resources Research. 22:695-704
A commonly accepted first-order approximation of the equation for steady state flow in a fully saturated spatially random medium has the form of Poisson's equation. This form allows for the advantageous use of Green's functions to solve for the rando
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1906d22f05a58e23948c8655b075e2f
https://doi.org/10.1029/wr022i005p00695
https://doi.org/10.1029/wr022i005p00695