Record Display for the EPA National Library Catalog

RECORD NUMBER: 5 OF 23

OLS Field Name OLS Field Data
Main Title Dispersion in heterogeneous nonuniform anisotropic porous media,
Author Greenkorn, Robert Albert,
Publisher [Environmental Protection Agency, Water Quality Office]; for sale by the Supt. of Docs., U.S. Govt. Print. Off.,
Year Published 1970
OCLC Number 00203435
Subjects Dispersion. ; Laminar flow. ; Mixing. ; Porosity. ; Practice Guideline.
Internet Access
Description Access URL
https://nepis.epa.gov/Exe/ZyPDF.cgi?Dockey=9101N41H.PDF
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
EJBD ARCHIVE EPA 16060-DLL-09-70 Headquarters Library/Washington,DC 05/12/2014
EJBM  TC171.G67 Headquarters Library/Washington,DC 11/04/2013
EKAD  16060 DLL 09/70 Region 4 Library/Atlanta,GA 08/23/2002
EKAD  TC171.G67 Region 4 Library/Atlanta,GA 08/23/2002
ELBD RPS EPA 16060-DLL-09-70 repository copy AWBERC Library/Cincinnati,OH 11/04/2019
ELBD  EPA 16060-DLL-09-70 AWBERC Library/Cincinnati,OH 04/13/2020
Collation x, 82 pages illustrations 28 cm.
Notes
"1606 DLL 09/70." Prepared for the Water Quality Office, Environmental Protection Agency. Includes bibliographical references.
Contents Notes
The objective of this project is to study the theory and measurement of dispersion during miscible flow in heterogeneous nonuniform anisotropic porous media. An understanding of the dispersion phenomenon is necessary to predict flow of miscible fluids in non-homgeneous porous media. A significant literature review of dispersion in non-homogeneous porous media was accomplished. The continuum and statistical theories of flow in porous media were studied. A series of experiments in models of unconsolidated porous media were run to study the effects of heterogeneity, nonuniformity, and anisotropy on dispersion. The non-homogeneities are defined in relation to permeability of the media and dispersion coefficients are correlated with respect to permeability. Tracer output curves from models were interpreted for dispersion. Dispersion changes significantly with permeability. When models of different permeability are connected, the dispersive effect is not reciprocal. Dispersion changes significantly with nonuniformity. Likewise there is a significant effect when models of different nonuniformity are interconnected (second-order heterogeneity). Anisotropy was included in two kinds of models (linear and radial) by packing alternate layers of beads causing flow through these layers at different angles. The usual dispersion model is not adequate for "block box" prediction of the tracer output curve for data on anisotropic shperes. The results have immediate practical applicates, especially in tracing of contaminents in surface and subsurface flow such as movement of pesticides, fertilizers, acid mine drainage, feed-lot waste, etc. through the soil.