Flow in Conduits with Low Roughness Concentration

by John A. Roberson, (M.ASCE), Prof. of Civ. Engrg.; Coll. of Engrg., Washington State Univ., Pullman, WA,
C. K. Chen, Res. Asst.; Coll. of Engrg., Washington State Univ., Pullman, WA,


Serial Information: Journal of the Hydraulics Division, 1970, Vol. 96, Issue 4, Pg. 941-957


Document Type: Journal Paper

Discussion: Garde Ramachandra J. (See full record)
Closure: (See full record)

Abstract: Transition functions which relate the friction factor and the relative roughness to the Reynolds number are obtained by utilizing the basic laws for turbulent flow in conduits plus the relationship between the drag of blunt bodies and the velocity of flow past the bodies. Solutions are made for boundaries roughened with cubes and spheres. The results are compared with experimental results by Koloseus, O'Loughlin and Schlichting.

Subject Headings: Turbulent flow | Hydraulic roughness | Conduits | Friction | Reynolds number | Drag (fluid dynamics) | Fluid velocity | Domain boundary

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