Simulation of Mosul Dam Break Using Finite Volume Method
Mosul dam is an earth-fill embankment located north of Iraq on the Tigris River forming a reservoir with 11.11 km3 water storage capacity which is the largest dam in the country. The dam is built on a rock bed foundation, in which the dissolution process is dynamic in the zone where gypsum and anhyd...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Erbil Polytechnic University
2020-06-01
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| Series: | Polytechnic Journal |
| Subjects: | |
| Online Access: | https://polytechnic-journal.epu.edu.iq/home/vol10/iss2/3 |
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| Summary: | Mosul dam is an earth-fill embankment located north of Iraq on the Tigris River forming a reservoir with
11.11 km3 water storage capacity which is the largest dam in the country. The dam is built on a rock
bed foundation, in which the dissolution process is dynamic in the zone where gypsum and anhydrite
layers present. During the construction development seepage locations were found in the dam foundation
and the grouting process is in progress until now to control this problem. Therefore, the possibility
of the Mosul dam break is highlighted by previous studies. In this research, a FORTRAN code based
on the finite volume method is modified to solve the two-dimensional shallow water equations and
simulating the Mosul dam break. The computational domain discretized using unstructured triangular
mesh. The solver applied Harten lax van leer with contact (HLLC) wave approximate Riemann solver
to calculate the cell interface fluxes, and the semi-implicit scheme employed to solve the friction
source term. The numerical scheme applied to two benchmark test cases, and the results showed
that the presented model was robust and accurate especially in handling wet/dry beds, mixed flow
regimes, discontinuities, negative water depths, and complex topography. The results of this study
demonstrate that flood waves may reach the center of Mosul city in < 6 h and water depth may rise
to 34 m after 7 h of Mosul dam breaking. Finally, the simulation results of the Mosul dam break were
used to prepare an emergency action plan. |
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| ISSN: | 2707-7799 |