An efficient hydrodynamic numerical model with wetting-drying capability

Purwanto Bekti Santoso, Nastain, Wahyu Widiyanto, Susumu Kanayama, Hitoshi Tanaka

Research output: Contribution to journalArticlepeer-review


The capability of a semi-implicit three-dimensional shallow water flow numerical model is extended by implementation of a wetting-drying scheme. The numerical model of the shallow water flow is examined in detail to reveal its inherent capability in simulating the wetting-drying process. In the implementation of a wetting drying scheme, a cell is defined as a dry cell, only if all the four depths at all of its sides become lower than a user defined threshold value. The greatest of the water levels computed in the center of two adjacent cells is taken as the water level at their common side, with a minimum value is specified for the resulting depth. The scheme was tested by comparisons between the model results and the analytical results of land-ocean interface position of linearly changed bottomdepth cases. The tests show excellent agreement between both of the results. Application to Segara Anakan was also carried out and shows the model capability in simulating the real condition.

Original languageEnglish
Pages (from-to)445-458
Number of pages14
JournalJournal of Engineering Science and Technology
Issue number4
Publication statusPublished - 2011 Aug 1


  • Finite difference method
  • Numerical method
  • Shallow water flow
  • Wetting-drying scheme

ASJC Scopus subject areas

  • Engineering(all)


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