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Depth-averaged modelling of vegetated meandering compound channel

Lim, A. H. A. S. and Ismail, Z. and Jamal, M. H. and Jumain, M. (2019) Depth-averaged modelling of vegetated meandering compound channel. In: 12th International Civil Engineering Post Graduate Conference, SEPKA 2018 and 3rd International Symposium on Expertise of Engineering Design, ISEED 2018, 27-28 Aug 2018, Johor, Malaysia.


Official URL: https://dx.doi.org/10.1088/1755-1315/220/1/012038


Advances of computing capabilities have increased the interest of using computational fluid dynamics to simulate more complex flow structures in open channel. A two-dimensional model, Telemac-2D was used to simulate flows with the presence of vegetation on the floodplain along the main channel inside a meandering compound channel. The simulation was done for two different relative depth for both non- and vegetated floodplain cases. The measured and simulated depth-averaged velocities were compared at the bend apex cross-section of the meandering compound channel for validation. Vegetation reduced the magnitude of the overbank flows and directed most of the overbank into the direction of the main channel. The effects of the vegetation on the overbank flows are more significant at low relative depth. The model shows good simulating capabilities of the depth-averaged velocities for the vegetated meandering compound channel and the numerical results also capable to generally capture the complex interaction between the overbank and inbank flows due to the presence of vegetation.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:floods, rivers, vegetation
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Civil Engineering
ID Code:88964
Deposited By: Narimah Nawil
Deposited On:26 Jan 2021 16:36
Last Modified:26 Jan 2021 16:36

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