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 : 34th Congress - Brisbane (2011) : THEME 7: Hydroinformatics : Parametric estimation of optimal mesh size for depth-averaged numerical flow models
Parametric estimation of optimal mesh size for depth-averaged numerical flow models
Author : R. Morales, and R. Ettema
Numerical experiments aimed at estimating optimal mesh size are performed using a twodimensional depth-averaged flow model. Despite the recent popularity of such 2-D numerical models, a comprehensive parametric assessment intended to determine the optimal mesh size has not been reported heretofore. The study presented herein entails an evaluation of several variables such as water depth, velocity magnitude, shear velocity, kinematic eddy viscosity, nodal spacing and, discretization error. The evaluation focuses especially on flow around bridge abutments. A global objective function accounting not only for the accuracy of the solution (represented by the average discretization error), but also for the computer running time (characterized by the number of iterations), is shown to provide an unbiased basis for selecting the optimal mesh size.
File Size : 367,666 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 34th Congress - Brisbane (2011)
Article : THEME 7: Hydroinformatics
Date Published : 01/07/2011
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