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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
Library Call Number Additional Info Location Last
NTIS  PB212 361 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
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.
NTIS Title Notes Completion rept. Jul 68-Jun 72.
PUB Date Free Form 14 Aug 72,
Category Codes 20D; 80F
NTIS Prices PC A02/MF A01
Document Type NT
Cataloging Source NTIS/MT
Control Number 326632817
Origin NTIS
Type CAT