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 : A Momentum Integral Model for Vertical Jet in Wavy Environment
A Momentum Integral Model for Vertical Jet in Wavy Environment
Author : Fei Hu, Yongping Chen and Changkuan Zhang
A momentum integral model is developed to predict the hydrodynamic behaviours of a vertical jet in the wavy environment. The transverse profiles of jet velocity are assumed to be Gaussian-type profile, while the entrainment function is modified to account for the wave effect. Based on the assumption that the jet flow field is at 'instantaneously' steady state, the Lagrange tracking method and the fourth-order R-K approach are adopted to solve the governing equations. A vertical jet in regular waves is simulated by use of the model. The results show that the entrainment effect is significantly enhanced under the wave action, resulting in a faster decay of centerline velocity and a larger jet half-width, compared to the jet in stagnant environment. Those findings are consistent with the results obtained from the previous experimental and numerical studies in the literature.
File Size : 534,113 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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