Drag-Characterization Method for Arbitrarily Rough Surfaces by Means of Rotating Disks

[+] Author and Article Information
P. S. Granville

Ship Performance Department, David W. Taylor Naval Ship R&D Center, Bethesda, Md. 20084

J. Fluids Eng 104(3), 373-377 (Sep 01, 1982) (5 pages) doi:10.1115/1.3241854 History: Received March 02, 1981; Online October 26, 2009


An indirect similarity-law characterization method is presented for any arbitrary irregular roughness covering a circular disk. Formulas are presented for converting the measured torques and rotary speeds of this rough rotating disk into appropriate local values at the disk edge required for the characterization.

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