SHIP MOTIONS IN SHALLOW WATER. SCALING TECHNIQUES INCLUDING VISCOUS EFFECTS
The purpose of this paper is to demonstrate techniques for separating the viscous and inviscid effects of two-dimensional ship sections oscillating in shallow water. Although heaving motion is used for the development, applications to other modes of motion are comparable. The general approach is to use energy considerations, measuring the total energy input as well as the energy absorption by free surface waves. The energy dissipation by viscous effects is obtained by subtraction. The added mass coefficient is obtained, as well as the two damping coefficients--viscous and inviscid. A modified Reynolds number is used to obtain exact scaling abilities of viscous effects, which is not available in ship resistance studies. The experimental solution is characterized by the use of a single model which satisfies both the geometric and dynamic scaling parameters.
-
Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/0020868X
-
Corporate Authors:
International Periodical Press
193 Heemraadssingel
Rotterdam, Netherlands -
Authors:
- Fisher, K W
- Publication Date: 1970-1
Media Info
- Features: References;
- Pagination: p. 348-58
-
Serial:
- International Shipbuilding Progress
- Volume: 17
- Issue Number: 195
- Publisher: IOS Press
- ISSN: 0020-868X
- Serial URL: http://www.iospress.nl/journal/international-shipbuilding-progress/
Subject/Index Terms
- TRT Terms: Coefficients; Mass; Navigation; Oscillation; Resistance (Mechanics); Viscosity
- Uncontrolled Terms: Scaling laws
- Old TRIS Terms: Added mass; Oscillation | damping; Shallow water effects; Viscous resistance
- Subject Areas: Marine Transportation; Vehicles and Equipment;
Filing Info
- Accession Number: 00019188
- Record Type: Publication
- Source Agency: Engineering Index
- Files: TRIS
- Created Date: Nov 8 1971 12:00AM