A simplified approach to modelling all types of obstacles in TELEMAC-2D and 3D

Bourban, S. and Turnbull, M. (2023) A simplified approach to modelling all types of obstacles in TELEMAC-2D and 3D. In: TELEMAC-MASCARET User Conference 2023, 12-13 October 2023, Karlsruhe, Germany.

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Official URL: https://www.opentelemac.org/index.php/2023


A simplified approach has been implemented in the openTELEMAC system to represent most types of obstacles, or hydraulic structures, including weirs, culverts, bridges, turbines, pumps, sluices, porous or solid barriers, storage ponds, etc., each including several variations of their defining hydraulic characteristics taken from empirical formulations. For instance, weirs can now either be sharp- or broad-crested, v-shaped or tilted, submerged or not, reversable or linked to a storage pond. The objective of the work was to simplify user inputs and completely generalise hydraulics structures based on an abstraction of “obstacle”. For instance, the user should not have to enter node numbers or duplicate information while providing georeferenced definition of geometries. To achieve this, the geometry of the obstacle is defined through a set of georeferenced lines, within a single file for all geometries, whether open polylines or closed polygons. The defining parameters are keyword-based similar to those of the steering files of the openTELEMAC system, again, stored in a single file for all obstacles. Other files can then be used to control the operation of the obstacle, whether driven by time sequences or water level variations. Finally, as it is customary with the openTELEMAC system, user subroutines can also help manually control gates, sluices, pumps, turbines, etc.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Hydraulic Structure, Obstacle, Weir, Turbine, Pumps, Barrier, Sluice, Bridge, Culvert, Storage Pond
Subjects: Maritime > General
Divisions: Maritime
Depositing User: Helen Stevenson
Date Deposited: 14 Dec 2023 14:47
Last Modified: 14 Dec 2023 14:47
URI: http://eprints.hrwallingford.com/id/eprint/1597

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