| 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
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| 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 |
