Similarity-Law Characterization Methods for Arbitrary Hydrodynamic Roughnesses.
DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD SHIP PERFORMANCE DEPT
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Methods are described for obtaining similarity-law characterization for arbitrary roughnesses indirectly from pipe-flow head loss, flat-plate drag, and rotating-disk torque. The roughness characterizations are used to make viscous drag predictions by means of boundary-layer calculations. A simplified drag prediction method using form factors and equivalent rough flat plates is described in detail. Author
- Fluid Mechanics