Simulation of urban flooding using 3D computational fluid dynamics with turbulence model
An alarming increase in the frequency of extreme rainfall events necessitates advanced flood risk reduction methods. This study uses ANSYS Fluent to simulate the 'Model urban city' flow experiment, comparing aligned and staggered urban layouts. The simulation's goodness of fit, evalua...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-03-01
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| Series: | Results in Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123024018528 |
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| author | Muhammad Waqar Saleem Muhammad Rashid Sajjad Haider Mohiq Khalid Amro Elfeki |
| author_facet | Muhammad Waqar Saleem Muhammad Rashid Sajjad Haider Mohiq Khalid Amro Elfeki |
| author_sort | Muhammad Waqar Saleem |
| collection | DOAJ |
| description | An alarming increase in the frequency of extreme rainfall events necessitates advanced flood risk reduction methods. This study uses ANSYS Fluent to simulate the 'Model urban city' flow experiment, comparing aligned and staggered urban layouts. The simulation's goodness of fit, evaluated by flow depth at probe locations, achieved a Nash-Sutcliffe Efficiency (NSE) of 0.83, indicating a 'very good' performance. Sensitivity Analysis (SA) indicated that increasing grid coarseness from 1.7 million to 0.1 million cells raised the Root Mean Square Error (RMSE) by 15 %. This Research also assessed different mesh treatments for building incorporation in the computational mesh-building hole (BH) and Building Block (BB). The BH method was computationally more efficient, taking about 1 Day compared to 2–3 days for BB. The Building Resistance (BR) method yielded poor results. Employing a sophisticated 3D CFD model, this study provides detailed inputs for high-precision flood risk assessments in urban areas prone to rapid flooding, enhancing the precision and applicability of urban flood models. |
| format | Article |
| id | doaj-art-cde17f68f05b4d7aa64a56b65e4edb8a |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-cde17f68f05b4d7aa64a56b65e4edb8a2024-12-15T06:16:35ZengElsevierResults in Engineering2590-12302025-03-0125103609Simulation of urban flooding using 3D computational fluid dynamics with turbulence modelMuhammad Waqar Saleem0Muhammad Rashid1Sajjad Haider2Mohiq Khalid3Amro Elfeki4School of Civil and Environmental Engineering (SCEE), NUST Institute of Civil Engineering (NICE), National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, Pakistan; Corresponding author.School of Civil and Environmental Engineering (SCEE), NUST Institute of Civil Engineering (NICE), National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, PakistanSchool of Civil and Environmental Engineering (SCEE), NUST Institute of Civil Engineering (NICE), National University of Sciences and Technology (NUST), Sector H-12, Islamabad 44000, PakistanDepartment of Civil Engineering, NFC Institute of Engineering & Fertilizer Research (IE&FR), Faisalabad 38090, PakistanDepartment of Water Resources, Faculty of Environmental Sciences, King Abdulaziz University 21589 Jeddah, Saudi Arabia; Irrigation and Hydraulics Department, Faculty of Engineering, Mansoura University, Mansoura 35516, EgyptAn alarming increase in the frequency of extreme rainfall events necessitates advanced flood risk reduction methods. This study uses ANSYS Fluent to simulate the 'Model urban city' flow experiment, comparing aligned and staggered urban layouts. The simulation's goodness of fit, evaluated by flow depth at probe locations, achieved a Nash-Sutcliffe Efficiency (NSE) of 0.83, indicating a 'very good' performance. Sensitivity Analysis (SA) indicated that increasing grid coarseness from 1.7 million to 0.1 million cells raised the Root Mean Square Error (RMSE) by 15 %. This Research also assessed different mesh treatments for building incorporation in the computational mesh-building hole (BH) and Building Block (BB). The BH method was computationally more efficient, taking about 1 Day compared to 2–3 days for BB. The Building Resistance (BR) method yielded poor results. Employing a sophisticated 3D CFD model, this study provides detailed inputs for high-precision flood risk assessments in urban areas prone to rapid flooding, enhancing the precision and applicability of urban flood models.http://www.sciencedirect.com/science/article/pii/S2590123024018528ANSYSNumerical simulationComputational fluid dynamics (CFD)Urban flooding3D flood inundation modelingFlash flood experiment |
| spellingShingle | Muhammad Waqar Saleem Muhammad Rashid Sajjad Haider Mohiq Khalid Amro Elfeki Simulation of urban flooding using 3D computational fluid dynamics with turbulence model Results in Engineering ANSYS Numerical simulation Computational fluid dynamics (CFD) Urban flooding 3D flood inundation modeling Flash flood experiment |
| title | Simulation of urban flooding using 3D computational fluid dynamics with turbulence model |
| title_full | Simulation of urban flooding using 3D computational fluid dynamics with turbulence model |
| title_fullStr | Simulation of urban flooding using 3D computational fluid dynamics with turbulence model |
| title_full_unstemmed | Simulation of urban flooding using 3D computational fluid dynamics with turbulence model |
| title_short | Simulation of urban flooding using 3D computational fluid dynamics with turbulence model |
| title_sort | simulation of urban flooding using 3d computational fluid dynamics with turbulence model |
| topic | ANSYS Numerical simulation Computational fluid dynamics (CFD) Urban flooding 3D flood inundation modeling Flash flood experiment |
| url | http://www.sciencedirect.com/science/article/pii/S2590123024018528 |
| work_keys_str_mv | AT muhammadwaqarsaleem simulationofurbanfloodingusing3dcomputationalfluiddynamicswithturbulencemodel AT muhammadrashid simulationofurbanfloodingusing3dcomputationalfluiddynamicswithturbulencemodel AT sajjadhaider simulationofurbanfloodingusing3dcomputationalfluiddynamicswithturbulencemodel AT mohiqkhalid simulationofurbanfloodingusing3dcomputationalfluiddynamicswithturbulencemodel AT amroelfeki simulationofurbanfloodingusing3dcomputationalfluiddynamicswithturbulencemodel |