Record Display for the EPA National Library Catalog

RECORD NUMBER: 15 OF 21

OLS Field Name OLS Field Data
Main Title Measurement and Analysis of Natural-Type Surface Roughnesses Affecting Fluid Flow.
Author Pose, C. J. ;
CORP Author Connecticut Univ., Storrs. Inst. of Water Resources.
Year Published 1972
Report Number DI-14-01-0001-1626; OWRR-A-020-CONN; 14837,; A-020-CONN(1)
Stock Number PB212 361
Additional Subjects ( Stream flow ; Friction) ; ( Surface roughness ; Fluid dynamic properties) ; Sands ; Model tests ; Data processing ; Curve fitting ; Statistical analysis ; Hydraulic friction ; Sand beds
Holdings
Library Call Number Additional Info Location Last
Modified
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Status
NTIS  PB212 361 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 8p
Abstract
An investigation is reported of the feasibility of using the statistical distributions of roughness heights, slopes, and curvatures to characterize hydraulically rough surfaces. The direct measurement technique, such as has been employed to find the root-mean-square value of roughness heights, is evaluated. When automatically measured and recorded profiles of developing sand bed roughness became available, it was found that each distribution approaches a well defined limit, suggesting that 95 percentile values may be used to characterize natural-type roughnesses.