Identification of Suitable Grid Size for Accurate Computation of Run-up Height
A numerical investigation has been carried out to obtain a non-dimensional grid size (grid size/ tsunami base width) for the near shore discretisation of computational domains for long wave modelling. A 1D domain has been considered in which, the flow has been solved by 1D shallow water equations wi...
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2010-09-01
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Series: | International Journal of Ocean and Climate Systems |
Online Access: | https://doi.org/10.1260/1759-3131.1.3-4.223 |
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doaj-0863502aadac416cae396c9a6e1f84e22020-11-25T01:56:43ZengSAGE PublishingInternational Journal of Ocean and Climate Systems1759-31311759-314X2010-09-01110.1260/1759-3131.1.3-4.22310.1260_1759-3131.1.3-4.223Identification of Suitable Grid Size for Accurate Computation of Run-up HeightManasa Ranjan BeheraK. MuraliV. SundarA numerical investigation has been carried out to obtain a non-dimensional grid size (grid size/ tsunami base width) for the near shore discretisation of computational domains for long wave modelling. A 1D domain has been considered in which, the flow has been solved by 1D shallow water equations with vertically integrated flow variables. The sensitivity study of the grid size was carried out in the 1D channel with an open boundary at one end and shelf boundary at the other end. The grid size was varied from 10 m to 1000 m and its effect on the computation of the tsunami run-up along the shoreline has been investigated. The non-dimensional grid size for the computation of run-up was optimised by comparing the non-dimensional run-up (tsunami run-up/initial tsunami height) and a threshold value of 5.0e-4 was obtained. Further, the study was extended to real scenario by adopting various grids for the shelf region of northern Tamil Nadu coast, south east coast of India in 2D and a suitable grid size was obtained.https://doi.org/10.1260/1759-3131.1.3-4.223 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Manasa Ranjan Behera K. Murali V. Sundar |
spellingShingle |
Manasa Ranjan Behera K. Murali V. Sundar Identification of Suitable Grid Size for Accurate Computation of Run-up Height International Journal of Ocean and Climate Systems |
author_facet |
Manasa Ranjan Behera K. Murali V. Sundar |
author_sort |
Manasa Ranjan Behera |
title |
Identification of Suitable Grid Size for Accurate Computation of Run-up Height |
title_short |
Identification of Suitable Grid Size for Accurate Computation of Run-up Height |
title_full |
Identification of Suitable Grid Size for Accurate Computation of Run-up Height |
title_fullStr |
Identification of Suitable Grid Size for Accurate Computation of Run-up Height |
title_full_unstemmed |
Identification of Suitable Grid Size for Accurate Computation of Run-up Height |
title_sort |
identification of suitable grid size for accurate computation of run-up height |
publisher |
SAGE Publishing |
series |
International Journal of Ocean and Climate Systems |
issn |
1759-3131 1759-314X |
publishDate |
2010-09-01 |
description |
A numerical investigation has been carried out to obtain a non-dimensional grid size (grid size/ tsunami base width) for the near shore discretisation of computational domains for long wave modelling. A 1D domain has been considered in which, the flow has been solved by 1D shallow water equations with vertically integrated flow variables. The sensitivity study of the grid size was carried out in the 1D channel with an open boundary at one end and shelf boundary at the other end. The grid size was varied from 10 m to 1000 m and its effect on the computation of the tsunami run-up along the shoreline has been investigated. The non-dimensional grid size for the computation of run-up was optimised by comparing the non-dimensional run-up (tsunami run-up/initial tsunami height) and a threshold value of 5.0e-4 was obtained. Further, the study was extended to real scenario by adopting various grids for the shelf region of northern Tamil Nadu coast, south east coast of India in 2D and a suitable grid size was obtained. |
url |
https://doi.org/10.1260/1759-3131.1.3-4.223 |
work_keys_str_mv |
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