Pramukti, Daru Nurisma (2017) Large Eddy Simulation Of Dambreak Flow Through Porous Obstacle. Magister thesis, Universitas Brawijaya.
Abstract
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English Abstract
The prediction of dambreak floods is of great interest to hydraulic engineers. Variations of water level and velocity in these extreme events are important parameters for the design of hydraulic systems and for flood control. Most of the previous studies used flume experiments and two-dimensional shallow water equations to investigate the flood waves over smooth channels or through impermeable obstacles. This study uses a three-dimensional numerical model and flume experiments to investigate dambreak flows through porous obstacles on the channel bed. The flow motion was simulated by a Large Eddy Simulation (LES) model, and the variation of water surface was solved by the Volume of Fluid (VOF) method. The effect of porous obstacles to the water flows was simulated by the a porous drag model. The variation of water surface in the water flume was measured by a wave gauge and a digital camera. The simulated water surface was validated by the measured surface elevation. Furthermore, the verified numerical model was then used to study the influences of the porosity of obstacles to the dambreak flows. Numerical results reveal that the resistance of the porous obstacle can be simulated by a porous drag model.
| Item Type: | Thesis (Magister) |
|---|---|
| Identification Number: | TES/627.8/PRA/l/2017/041709409 |
| Uncontrolled Keywords: | DAMS, DAM FAITURE, EDDIES - SIMULATION METHODE, EDDIES - MATHEMATICAL MODELS |
| Subjects: | 600 Technology (Applied sciences) > 627 Hydraulic engineering > 627.8 Dams and reservoirs |
| Divisions: | S2/S3 > Magister Teknik Sipil, Fakultas Teknik |
| Depositing User: | Nur Cholis |
| Date Deposited: | 13 Nov 2017 01:43 |
| Last Modified: | 29 Nov 2021 07:28 |
| URI: | http://repository.ub.ac.id/id/eprint/5300 |
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