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Main Title Mathematical Model of the Columbia River from the Pacific Ocean to Bonneville Dam. Part I. Theory, Program Notes and Programs.
Author Callawa, R. J. ; Byra, K. V. ; Ditswort, G. R. ;
CORP Author Pacific Northwest Water Lab., Corvallis, Oreg.
Year Published 1969
Report Number 11867,; 16070-DBH-11/69
Stock Number PB-202 422
Additional Subjects ( Rivers ; Mathematical models) ; Estuaries ; Tidewater ; Water pollution ; Temperature distribution ; Periodic variations ; Meteorological data ; Tidal currents ; Computerized simulation ; Water flow ; Flow measurement ; Computer systems programs ; Washington(State) ; Oregon ; Tidal rivers ; Water pollution models ; Columbia river ; Thermal pollution ; Finite element analysis
Library Call Number Additional Info Location Last
NTIS  PB-202 422 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 157p
Abstract The Columbia River from the Pacific Ocean to Bonneville Dam is treated as a series of two-dimensional finite elements in the formulation of a mathematical model of the system. Currents and stages are simulated along the river via an explicit solution of the one-dimensional equations of motion and continuity; two-dimensional conditions in the horizontal are approached by means of a branched network of connecting channels and junctions. Computed net velocities and stages are used as input to the advection-diffusion equation and solutions are obtained for any coupled (e.g., BOD-DO) or uncoupled, first order reaction, conservative and/or non-conservative substance. Emphasis is placed on obtaining a solution for temperature as the dependent variable. Allowance is made for input of meteorological variables and a stepwise heat budget computation is made in order to predict temperature conditions on an hourly basis. A discussion of some existing pollution models, numerical methods and error sources is given; computer programs and program notes are listed. (Author)
Supplementary Notes See also Part 2, PB-202 423.
PUB Date Free Form Nov 69,
Category Codes 8G; 64H
NTIS Prices PC A08 MF A01
Document Type NT
Cataloging Source NTIS/MT
Control Number 326520787
Origin NTIS
Type CAT