DBPapers
DOI: 10.5593/SGEM2014/B21/S8.058

ANALYSIS OF BOUNDARY CONDITIONS OFFSET FOR THE ACCURACY OF THE NUMERICAL MODELING OF THE LEVEES

A. Pieta, M. Dwornik
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-10-0 / ISSN 1314-2704, June 19-25, 2014, Book 2, Vol. 1, 457-464 pp

ABSTRACT
Numerical modeling of important stage during planning construction of bridges, levees, tunnels or any others ground and underground building, that may have affect on the neighborhood and human life. Influence of boundary condition on accuracy of numerical calculation is an example of a modeling part, that cannot be omitted. Accuracy and time computing of calculation strongly depend on dimension of analyzed model. Rare computational grids considerably decrease resolution and quality of calculation, whereas big size of numerical computational grids rapidly increase calculation time. One of the method of changing size of model is optimize distance to the edge of model interpreted as boundary conditions. Determination of such distance should be compromise between computational cost and minimize of the influence of the model boundaries on numerical calculation under the levee and its nearest neighborhood. In this paper results of numerical modeling, with different boundary condition offsets are presented in order to find the optimal one. Calculation was conducted using Itasca FLAC v.7.0 2D

Keywords: boundary conditions, numerical modeling, levee

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