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) ALL CONTENT : Hydro-environment : A random-walk study of scalar mixing in water waves
A random-walk study of scalar mixing in water waves
Author : WU XUEFEI(1), LIANG DONGFANG(1, 2)
ABSTRACT
This paper applies the random walk method to study the scalar transport phenomena in vertical two-dimensional wave flows. This Lagrangian model is first verified against an idealized problem involving unsteady shear flows, and the good agreement between the simulated dispersion coefficient and the analytical value demonstrates the validity of this model. Water waves are then formulated based on the linear and second order Stokes wave theories. The longitudinal dispersion coefficients are calculated and compared between the two wave theories. The simulation results show high accuracy of the random walk method. The choice of the control parameters used in the model, such as the particle number and time step, is discussed for a good balance between the computational expense and accuracy.
File Size : 465,284 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 36th Congress - The Hague (2015) ALL CONTENT
Article : Hydro-environment
Date Published : 28/08/2015
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