IAHR, founded in 1935, is a worldwide independent member-based organisation of engineers and water specialists working in fields related to the hydro-environmental sciences and their practical application. Activities range from river and maritime hydraulics to water resources development and eco-hydraulics, through to ice engineering, hydroinformatics, and hydraulic machinery.
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You are here : eLibrary : IAHR World Congress Proceedings : 36th Congress - The Hague (2015) FULL PAPERS : THEME 4- WATER ENGINEERING : STATISTICAL PROPERTIES OF BOTTOM VELOCITIES IN A WAVE PLUS CURRENT CONDITION
STATISTICAL PROPERTIES OF BOTTOM VELOCITIES IN A WAVE PLUS CURRENT CONDITION
Author : CARLA FARACI , PIETRO SCANDURA & ENRICO FOTI
A statistical description of the results of three experimental campaigns focused on orthogonal waves-current interaction in the presence of a sandy bed, a gravel bed and a rippled bed is presented. Higher order statistics have been determined for the velocity components in a current only and a wave plus current conditions. It was found that when current only data are analyzed, no matter on the bed roughness conditions, the probability density of the velocity close to the bed is somewhat similar to a Gaussian distribution; far from the bed this similarity is less perceived. Skewness and Kurtosis, with respect to the Gaussian values, decreases and increases respectively when the distance from the bed increases. When a wave is superimposed on the current, the frequency distribution appears to be double peaked, with the highest peak always corresponding to the lower velocity range. This occurrence has been explained by means of a phase analysis which showed that the more frequent values are smaller than the average velocity.
File Size : 802,460 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) FULL PAPERS
Article : THEME 4- WATER ENGINEERING
Date Published : 19/04/2016
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