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TECHNICAL PAPERS

Turbulent Boundary Layers Over Surfaces Smoothed by Sanding

[+] Author and Article Information
Michael P. Schultz

Naval Architecture & Ocean Engineering Department, United States Naval Academy, Annapolis, MD 21402

Karen A. Flack

Mechanical Engineering Department, United States Naval Academy, Annapolis, MD 21402

J. Fluids Eng 125(5), 863-870 (Oct 07, 2003) (8 pages) doi:10.1115/1.1598992 History: Received August 19, 2002; Revised March 23, 2003; Online October 07, 2003
Copyright © 2003 by ASME
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References

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Figures

Grahic Jump Location
Skin-friction coefficient versus momentum thickness Reynolds number. (Overall uncertainty in Cf: smooth wall, ±4%; rough wall, ±7%.)
Grahic Jump Location
Mean velocity profiles in wall coordinates for all surfaces at the highest freestream velocity. (Overall uncertainty in U+: smooth wall, ±4%; rough wall, ±7%.)
Grahic Jump Location
Mean velocity profiles in wall coordinates for (a) the unsanded surface, (b) the 60-grit sanded surface, and (c) the 120-grit sanded surface. (Overall uncertainty in U+, ±7%.)
Grahic Jump Location
Roughness functions (ΔU+ versus k+) for the rough specimens. (Overall uncertainty in ΔU+, ±10% or ±0.2 whichever is greater.)
Grahic Jump Location
Roughness functions (ΔU+ versus k+) for the painted surfaces. (Overall uncertainty in ΔU+, ±0.2.)
Grahic Jump Location
Velocity defect profiles for all surfaces at the highest freestream velocity. (Overall uncertainty in (Ue−U)/uτ: smooth wall, ±5%; rough wall, ±7%.)
Grahic Jump Location
Normalized axial Reynolds normal stress profiles for all surfaces at the highest freestream velocity. (Overall uncertainty in u′2/uτ2: smooth wall, ±5%; rough wall, ±7%.)
Grahic Jump Location
Normalized axial Reynolds normal stress profiles for (a) the unsanded surface, (b) the 60-grit sanded surface, and (c) the 120-grit sanded surface. (Overall uncertainty in u′2/uτ2, ±7%.)
Grahic Jump Location
Normalized wall-normal Reynolds normal stress profiles for all surfaces at the highest freestream velocity. (Overall uncertainty in v′2/uτ2: smooth wall, ±6%; rough wall, ±8%.)
Grahic Jump Location
Normalized wall-normal Reynolds normal stress for (a) the unsanded surface, (b) the 60-grit sanded surface, and (c) the 120-grit sanded surface. (Overall uncertainty in v′2/uτ2, ±8%.)
Grahic Jump Location
Normalized Reynolds shear stress profiles for all surfaces at the highest freestream velocity. (Overall uncertainty in −uv/uτ2: smooth wall, ±8%; rough wall, ±10%.)
Grahic Jump Location
Normalized Reynolds shear stress profiles for (a) the unsanded surface, (b) the 60-grit sanded surface, and (c) the 120-grit sanded surface. (Overall uncertainty in −uv/uτ2, ±10%.)

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