Experiments of Two-Dimensional Transom Stern Flow

Authors: Maki, Kevin J.; Troesch, Armin W.; Beck, Robert F.

Source: Journal of Ship Research, Volume 52, Number 4, December 2008 , pp. 291-300(10)

Publisher: Society of Naval Architects and Marine Engineers (SNAME)

Buy & download fulltext article:

Price: $40.00 plus tax (Refund Policy)

Abstract:

Measurements of the free-surface behind a backward facing step are made using laser-induced fluorescence and a digital video camera. Tests are conducted for two Reynolds numbers and a range of Froude numbers. An edge detection algorithm is used to locate the free surface from the digital images, and the ensemble of images are used to calculate the mean and root mean square of the elevation. The results of amplitude, length, and steepness are determined from the mean profiles and compared to existing potential flow theories. It is found that the potential flow theories overpredict the real-fluid measured mean-wave amplitude. The experimentally determined wavelength is much shorter than the nominal length, and an existing stream function theory is implemented to explain how the viscous wake acts to shorten the steady wavelength.

Keywords: HYDRODYNAMICS (GENERAL); WAKE; WAVES

Document Type: Research article

Publication date: 2008-12-01

More about this publication?

The Journal of Ship Research is a quarterly publication providing highly technical papers on applied research in hydrodynamics, propulsion, ship motions, structures, and vibrations. While the Journal requires that papers present the results of research that advances ship and ocean science and engineering, most contributions bear directly on other disciplines, such as civil and mechanical engineering, applied mathematics, and numerical analysis. High quality papers are contributed from the U.S., Canada and overseas, with representation from established authorities as well as new researchers.
Information for Authors
Submit a Paper
Subscribe to this Title
Membership Information
ingentaconnect is not responsible for the content or availability of external websites