ROUGHNESS CHARACTERISTICS OF PLANE SURFACES BASED ON VELOCITY SIMILARITY LAWS.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)22_Publication in policy or professional journal

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Detail(s)

Original languageEnglish
Journal / PublicationAmerican Society of Mechanical Engineers (Paper)
Issue number81 -FE-34
Publication statusPublished - 1981
Externally publishedYes

Abstract

Some common problems of surface measurement and ambiguities of description are discussed, and it is shown that numerical discrepancies of a factor of 20 can result from the latter. A comprehensive program of roughness measurement on working surfaces is described associated with a program of flow measurement in an open flume in an attempt to isolate a range of surface wavelengths responsible for drag. A feasibility study of roughness measurement on coated surfaces is followed by measurements on hull replicas, gravel and coated steel plates. Measurements of an ablative coating system before and after an ocean voyage demonstrate a loss of roughness associated with a smoothing of peaks. Flow measurements suggest that surface wavelengths of less than 100 m do not interact with the fluid.

Citation Format(s)

ROUGHNESS CHARACTERISTICS OF PLANE SURFACES BASED ON VELOCITY SIMILARITY LAWS. / King, M. J.; Chuah, K. B.; Olszowski, S. T.; Thomas, T. R.

In: American Society of Mechanical Engineers (Paper), No. 81 -FE-34, 1981.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)22_Publication in policy or professional journal