Please use this identifier to cite or link to this item:
Title: Waves generated by a piston-type wavemaker
Authors: Madsen, Ole Secher.
Keywords: Water waves
Wave makers
Publisher: Coastal Engineering Research Center (U.S.)
Engineer Research and Development Center (U.S.)
Series/Report no.: Reprint;4-71
Abstract: Abstract: When a wavemaker generates a finite number of waves, it has been found that one of the first and one of the last waves in such a burst is considerably larger than the average. A mathematical model, based on the linearized governing equations, is used for the particular problem of the waves generated by a sinusoidally moving piston-type wavemaker starting from rest. Theoretical results for the magnitude of the large wave relative to the average agree fairly well with experiments; however, the actual wave height is smaller in the experiments than predicted by theory. It is shown, by extending the classical wavemaker theory to second order, that finite amplitude effects do not offer an explanation. However, pistons rarely fit the tank dimensions exactly, and an approximate evaluation indicates that the discrepancy between predicted and observed wave heights can be attributed to the effects of leakage around the piston.
Description: Reprinted from the Proceedings of the Twelfth Coastal Engineering Conference September 1970, Washington, D.C.
Rights: Approved for public release; distribution is unlimited.
Appears in Collections:Reprint Report

Files in This Item:
File Description SizeFormat 
CERC Reprint 4-71.pdf1.1 MBAdobe PDFThumbnail