TY - GEN
T1 - A comparative study of two different numerical methods on storm surge
AU - Mohit, A. A.
AU - Ide, Y.
AU - Yamashiro, M.
AU - Hashimoto, N.
N1 - Funding Information:
One of us (A. A. Mohit) acknowledges receipt of a scholarship from the Ministry of Education, Culture, Sports, Science and Technology: MEXT, Japan with number 163618. The first author would like to express his grateful thanks to the Government of Japan for the scholarship during this study to Disaster Risk Reduction Research Center, Faculty of Engineering, Kyushu University, We would also like to thank those reviewers whose comments and suggestion improve the final results of this paper.
Funding Information:
* This work is supported by Ministry of Education, Culture, Sports, Science and Technology: MEXT, Japan.
Publisher Copyright:
© 2018 World Scientific Publishing Co. Pte. Ltd.
PY - 2018
Y1 - 2018
N2 - 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.
AB - 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.
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U2 - 10.1142/9789813233812_0016
DO - 10.1142/9789813233812_0016
M3 - Conference contribution
AN - SCOPUS:85048355039
SN - 9789813233805
T3 - Proceedings of the 9th International Conference on APAC 2017
SP - 163
EP - 174
BT - ASIAN AND PACIFIC COASTS 2017
A2 - Cruz, Eric C
A2 - Suh, Kyung-Duck
A2 - Tajima, Yoshimitsu
PB - World Scientific Publishing Co. Pte Ltd
T2 - 9th International Conference on Asian and Pacific Coasts, APAC 2017
Y2 - 19 October 2017 through 21 October 2017
ER -