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 : 35th IAHR Congress - Chengdu (2013) : THEME 6 - MARITIME HYDRAULICS AND COASTAL ENGINEERING : Extreme Wave Loads on a Submerged Water Intake in Shallow Water
Extreme Wave Loads on a Submerged Water Intake in Shallow Water
Author : Andrew Cornett, Mark Hecimovich and Ioan Nistor
Submerged water intake structures are commonly used to collect seawater for cooling in industrial facilities such as power stations, refineries and LNG plants. A typical submerged intake structure for a coastal site consists of an open-ended vertical pipe located above the seabed and below a horizontal plate supported on several columns. The horizontal plate, known as a velocity cap, helps mitigate vortex formation and protects against entrainment of fish and other marine life. Estimating wave-induced forces on these types of structures is challenging, particularly when the intakes are located under breaking waves in shallow water. The relationships between wave properties and forces are not well understood, and no simple methods are available to predict hydrodynamic loads on submerged intakes, particularly those below breaking waves. This paper presents results from a series of experiments conducted in a wave flume at 1:15 scale to study the hydrodynamic forces exerted on a generic intake structure located on a sloping seabed in shallow water below breaking and non-breaking waves. The model intake structure was exposed to a wide range of regular and irregular wave conditions at three water levels, while the wave properties, kinematics, and 6-axis forces on the intake structure were all measured continuously. The measurements have been analyzed to discover the relationship between the wave conditions and the forcing ? for different parts of the intake and for the whole structure. This paper provides new insights concerning the hydrodynamic loads on submerged intake structures in shallow water under breaking and non-breaking waves.
File Size : 501,262 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Date Published : 19/07/2016
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