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.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/8672558
• 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
• 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