2D NUMERICAL MODEL OF FLOODING IN EAST BANGKOK
This paper proposes a new numerical flooding model oriented to water systems comprising large canal networks. The approach is based on the diffusion wave equation related to a modified version of the so-called "calculations with apparent cross-sectional flow areas." The mathematical formulation is based on the analogy of a porous medium characterized by a permeability depending on parameters and directions of the canal network. The "continuous medium" approach is combined with the nonnegative stable numerical algorithm (initially developed for the one-dimensional diffusion wave equation). A numerical solution of the resulting finite-difference equations requires a tangible generalization of the nonnegative algorithm to the case of coupled two-dimensional (2D) river-surface flows. Finally, the flood evolution in the lower Chao-Praya River basin (located in the eastern areas of Bangkok, Thailand) is simulated, and the computational efficiency of the proposed method is demonstrated.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/oclc/8672558
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Corporate Authors:
American Society of Civil Engineers
1801 Alexander Bell Drive
Reston, VA United States 20191-4400 -
Authors:
- Makhanov, S S
- Vannakrairojn, S
- Vanderperre, E J
- Publication Date: 1999-4
Language
- English
Media Info
- Features: Appendices; Figures; References; Tables;
- Pagination: p. 407-414
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Serial:
- Journal of Hydraulic Engineering
- Volume: 125
- Issue Number: 4
- Publisher: American Society of Civil Engineers
- ISSN: 0733-9429
- Serial URL: https://ascelibrary.org/journal/jhend8
Subject/Index Terms
- TRT Terms: Algorithms; Canals; Finite differences; Floods; Flow; Mathematical models; Permeability; Rivers; Simulation; Two dimensional flow; Wave equations
- Geographic Terms: Bangkok (Thailand); Chao-Praya River
- Subject Areas: Highways; Hydraulics and Hydrology; Marine Transportation; I26: Water Run-off - Freeze-thaw;
Filing Info
- Accession Number: 00763567
- Record Type: Publication
- Files: TRIS
- Created Date: May 17 1999 12:00AM