Record Display for the EPA National Library Catalog

RECORD NUMBER: 36 OF 299

OLS Field Name OLS Field Data
Main Title Computer Study of the Koh-Chang Model for Dredged Material Disposal.
Author Teeter, A. M. ; Johnson, B. H. ;
CORP Author Corvallis Environmental Research Lab., OR. Marine and Freshwater Ecology Branch. ;Army Engineer Waterways Experiment Station, Vicksburg, MS. Hydraulcs Lab.
Year Published 1979
Report Number EPA/600/3-79/027;
Stock Number PB-292 555
Additional Subjects Solid waste disposal ; Mathematical models ; Dredging ; Spoil ; Dredges ; Pipelines ; Barges ; Environmental impacts ; Water pollution ; Computer programming ; Performance evaluation ; Computerized simulation ; Dredged materials ; Dredge spoil ; Dredged material disposal ; Koh-Chang model
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB-292 555 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 06/23/1988
Collation 133p
Abstract
This report is on a computer study of the Koh-Chang model for physical fate prediction in dredge material disposal. This computer model can simulate three discharge methods: instantaneous bottom release, jet discharge, and discharge into a wake. Convective descent, dynamic collapse or bottom encounter, and long term diffusion phases of waste behavior are considered. Simulation results are most sensitive to variations in convective entrainment and form drag coefficients in the bottom dump method. In the jet method, the model is most sensitive to convective entrainment and cloud gradient coefficients. Model analysis on a single discharge opening with the results superimposed to represent the entire discharge is often necessary. The model is applied to five field situations for pipeline, hopper dredge, and bottom opening scow. Insufficient field data are available for validation. Modifications to the model have been made by COE-WES and EPA-CERL subsequent to this study.