Chapter
Dec 31, 2015
Effect of Wave–Current Interaction on the Wave Parameter
Authors: Yu-Cheng Li and John B. HerbichAuthor Affiliations
Publication: Coastal Engineering 1982
Abstract
The interaction of a gravity wave with a steady uniform current is described in this paper. Numerical calculations of the wave length change by different non-linear wave theories show that errors in the results computed by the linear wave theory are less than 10 percent within the range of 0.15 ≤ d/Ls ≤ 0.40, 0.01 ≤ Hs/Ls ≤ 0.07 and -0.15 ≤ U/Cs ≤ 0.30. Numerical calculations of wave height change employing different wave theories show that errors in the results obtained by the linear wave theory in comparison with the non-linear theories are greater when the opposing relative current and wave steepness become larger. However, within range of the following currents such errors will not be significant. These results were verified by model tests. Nomograms for the modification of wave length and wave height by the linear wave theory and Stokes’ third order theory are presented for a wide range of d/Ls, Hs/Ls and U/C. These nomograms provide the design engineer with a practical guide for estimating wave lengths and heights affected by currents.
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© 1982 American Society of Civil Engineers.
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Published online: Dec 31, 2015
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Yu-Cheng Li
Visiting Scholar, Ocean Engineering Program, Texas A&M University; Department of Hydraulic Engineering, Dalian Institute of Technology, Dalian, People's Republic of China, where the author is an Associate Professor.
John B. Herbich
Professor and Head, Ocean Engineering Program, Texas A&M University, College Station, Texas 77843, U.S.A.
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