Record Display for the EPA National Library Catalog

RECORD NUMBER: 29 OF 47

OLS Field Name OLS Field Data
Main Title Mathematical Models Associated with Point Line Source Discharges in Rivers.
Author Lin, Philip C. L. ;
CORP Author Environmental Monitoring and Support Lab.-Cincinnati, OH.
Year Published 1983
Report Number EPA-600/4-83-021;
Stock Number PB83-207373
Additional Subjects Water pollution ; Mathematical models ; Rivers ; Sampling ; Fluid flow ; Dispersions ; Sources ; Point sources ; Path of pollutants ; Numerical solution
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB83-207373 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 56p
Abstract
A literature search was conducted in the area of mass dispersion from instantaneous and continuous sources in bounded and unbounded flows. This study presents a mathematical model consisting of only two nondimensionalized variables and capable of generating universal concentration profiles of the pollutants in a rectangular channel flow for specified initial and boundary conditions. Determination of diffusion coefficients, mixing distance, sampling location and number of sampling points in a cross-section is possible. In other aspects, determination of the minimum sampling frequency required to collect a representative composite sample based on the previous effort is reexamined. It is concluded that a minimum sampling frequency of eight (8) for most of the flow and concentration patterns in the complete mixing zone is sufficient to provide enough accuracy for a representative sample collected by three out of four known compositing techniques.