A rapid flood inundation model for urban flood analyses
An efficient inundation model is required for flood early warning systems in urban areas. A 2D flood model uses a governing shallow water equation, and this model is computationally expensive despite benefiting from parallel computing techniques. As an alternative to conventional flood models, cellu...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-01-01
|
| Series: | MethodsX |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2215016123002017 |
| _version_ | 1827917750624845824 |
|---|---|
| author | Obaja Triputera Wijaya Tsun-Hua Yang Hao-Ming Hsu Philippe Gourbesville |
| author_facet | Obaja Triputera Wijaya Tsun-Hua Yang Hao-Ming Hsu Philippe Gourbesville |
| author_sort | Obaja Triputera Wijaya |
| collection | DOAJ |
| description | An efficient inundation model is required for flood early warning systems in urban areas. A 2D flood model uses a governing shallow water equation, and this model is computationally expensive despite benefiting from parallel computing techniques. As an alternative to conventional flood models, cellular automata (CA) and DEM-based models (DBMs) have been studied. CA flood models simulate floods efficiently. However, a small time step is required to ensure model stability when the grid size decreases due to its diffusive characteristics. Conversely, DBM models produce results quickly, but they only show the maximum flood extent. Additionally, pre- and postprocessing are required, which take considerable time. This study proposes a hybrid inundation model that combines the two alternative approaches, and it efficiently produces a high- resolution flood map without complex pre- and postprocessing. The hybrid model is also integrated with a 1D drainage module, and thus, the model reliably simulates urban area floods. • The rapid flood inundation model integrates CA module to simulate temporal distribution of floods and DEM module to provide details of floods. • A 1D Saint Venant equation is also solved in the rapid flood inundation model to simulate the drainage sytems in urban areas. • Two-way coupling between 2D-surface and 1D-drainag models are considered in the rapid flood inundation model. |
| first_indexed | 2024-03-13T03:32:54Z |
| format | Article |
| id | doaj.art-e5c93e7361c847f88c00f9e5e3f65edd |
| institution | Directory Open Access Journal |
| issn | 2215-0161 |
| language | English |
| last_indexed | 2024-03-13T03:32:54Z |
| publishDate | 2023-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | MethodsX |
| spelling | doaj.art-e5c93e7361c847f88c00f9e5e3f65edd2023-06-24T05:17:42ZengElsevierMethodsX2215-01612023-01-0110102202A rapid flood inundation model for urban flood analysesObaja Triputera Wijaya0Tsun-Hua Yang1Hao-Ming Hsu2Philippe Gourbesville3Department of Civil Engineering, National Yang-Ming Chiao Tung University, Hsinchu, 30010, Taiwan; Department of Civil Engineering, Parahyangan Catholic Univeristy, Bandung, 40141, IndonesiaDepartment of Civil Engineering, National Yang-Ming Chiao Tung University, Hsinchu, 30010, Taiwan; Corresponding author.Hydroinformatics and Water Engineering, Polytech Nice Sophia, 06410, Biot, FranceHydroinformatics and Water Engineering, Polytech Nice Sophia, 06410, Biot, FranceAn efficient inundation model is required for flood early warning systems in urban areas. A 2D flood model uses a governing shallow water equation, and this model is computationally expensive despite benefiting from parallel computing techniques. As an alternative to conventional flood models, cellular automata (CA) and DEM-based models (DBMs) have been studied. CA flood models simulate floods efficiently. However, a small time step is required to ensure model stability when the grid size decreases due to its diffusive characteristics. Conversely, DBM models produce results quickly, but they only show the maximum flood extent. Additionally, pre- and postprocessing are required, which take considerable time. This study proposes a hybrid inundation model that combines the two alternative approaches, and it efficiently produces a high- resolution flood map without complex pre- and postprocessing. The hybrid model is also integrated with a 1D drainage module, and thus, the model reliably simulates urban area floods. • The rapid flood inundation model integrates CA module to simulate temporal distribution of floods and DEM module to provide details of floods. • A 1D Saint Venant equation is also solved in the rapid flood inundation model to simulate the drainage sytems in urban areas. • Two-way coupling between 2D-surface and 1D-drainag models are considered in the rapid flood inundation model.http://www.sciencedirect.com/science/article/pii/S2215016123002017Hybrid Inundation Model (HIM) |
| spellingShingle | Obaja Triputera Wijaya Tsun-Hua Yang Hao-Ming Hsu Philippe Gourbesville A rapid flood inundation model for urban flood analyses MethodsX Hybrid Inundation Model (HIM) |
| title | A rapid flood inundation model for urban flood analyses |
| title_full | A rapid flood inundation model for urban flood analyses |
| title_fullStr | A rapid flood inundation model for urban flood analyses |
| title_full_unstemmed | A rapid flood inundation model for urban flood analyses |
| title_short | A rapid flood inundation model for urban flood analyses |
| title_sort | rapid flood inundation model for urban flood analyses |
| topic | Hybrid Inundation Model (HIM) |
| url | http://www.sciencedirect.com/science/article/pii/S2215016123002017 |
| work_keys_str_mv | AT obajatriputerawijaya arapidfloodinundationmodelforurbanfloodanalyses AT tsunhuayang arapidfloodinundationmodelforurbanfloodanalyses AT haominghsu arapidfloodinundationmodelforurbanfloodanalyses AT philippegourbesville arapidfloodinundationmodelforurbanfloodanalyses AT obajatriputerawijaya rapidfloodinundationmodelforurbanfloodanalyses AT tsunhuayang rapidfloodinundationmodelforurbanfloodanalyses AT haominghsu rapidfloodinundationmodelforurbanfloodanalyses AT philippegourbesville rapidfloodinundationmodelforurbanfloodanalyses |