A comparative study of two different numerical methods on storm surge

A. A. Mohit, Y. Ide, M. Yamashiro, N. Hashimoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)


The present study carries out the comparison of the water level associated with the numerical methods: Finite Difference Method (FDM) and Finite Volume Method (FVM) and the simulation considered on the present climate condition along the coast of Bangladesh. The governing equations of the first model are discretized through FDM and solved by a conditionally stable semi implicit manner on an Arakawa C-grid system. For the second model, α-coordinate is used for the irrational bottom slope representation and the mesh grid of the study domain is generated by the unstructured triangular cells. The feasible study domain with coast and island boundaries are approximated through proper stair steps for the FDM and the unstructured mesh representation for FVM. A one-way nested scheme technique is applied to the first model to include coastal intricacies as well as to preserve computational cost. Both the models are applied to extrapolate sea-surface elevation associated with the catastrophic cyclone 1991(BOB 01) along the seashore of Bangladesh. The simulation results from both the models are statistically copacetic and make a good acquiescent with some observed and reported data. In the statistical viewpoint, both the method has a good acceptance in storm surge simulation, but this study ensures the strong positive reconciliation with observed data and FVM simulation data. In Bangladesh region, it will be wise decision to use Finite Volume Methods for simulating the storm surge.

Original languageEnglish
Title of host publicationASIAN AND PACIFIC COASTS 2017
EditorsKyung-Duck Suh, Eric C Cruz, Yoshimitsu Tajima
PublisherWorld Scientific
Number of pages12
ISBN (Print)9789813233805
Publication statusPublished - 2018
Event9th International Conference on Asian and Pacific Coasts, APAC 2017 - Pasay, Philippines
Duration: Oct 19 2017Oct 21 2017

Publication series

NameProceedings of the 9th International Conference on APAC 2017


Other9th International Conference on Asian and Pacific Coasts, APAC 2017

All Science Journal Classification (ASJC) codes

  • Earth-Surface Processes
  • Oceanography


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