TELEMAC-2D

Purpose:	2D depth average hydrodynamic modeling of river and coastal areas
Developer:	Telemac-Mascaret Consortium
Key Features:	Open source, free pre- and post- processing tools
Latest Release:	Version 7p1r0, January 2016
OS Platform:	Linux, Mac OSX, Windows
Cost:	Free
Related Software:	Sobek, MIKE21, Flood Modeller,
Website:	TELEMAC-2D Homepage

Introduction

TELEMAC-2D, first launched in 1987, is a 2D depth average free surface hydrodynamic model that uses the Saint Venant equation. TELEMAC-2D models free-surface flows in two dimensions of horizontal space. At each point of the mesh, the program calculates the depth of water and the two velocity components. TELEMAC-2D has been used for maritime applications, including the building of dikes, dredging, and the impacts of waste discharges from coastal outfalls or thermal plumes, while river applications include the design of hydraulic structures, dam breaches, and flood analysis.

Key features of the TELEMAC 2D model include standard algorithms [TELEMAC-3D (3D Navier Stokes), SISYPHE (2D Sediment Transport), ARTEMIS (wave propagation in coastal areas)], that enable easy internal and external coupling; a finite element mesh that enables refinement of geometry to better describe features such as rivers, shores, levees, and roads; and a parallel version that allows the model to be used on a multi-processor computer. The model's sub-routines for each calculation code are written in Fortran-90, PERL or Python, allowing it to be used on multiple operating systems. Users are also able to adjust the codes meet specific requirements.

Advantages and Limitations

Advantages	Limitations
Software code has been in the public domain since 2010 Used extensively around the world Free tools for pre-and post-processing data Training available via consortium and 3rd party organizations Active user forum base Can be coupled with Deltares Water Quality (DELWAQ) model Can execute model on a Linux cluster	Difficult to determine friction factor Use command line to run software Cannot account for groundwater or coupling with urban drainage flood systems Requires at least three programs to generate results
Illustrative Screens

Sample Applications

Africa	East Asia and the Pacific	Europe & Central Asia	Latin America & the Caribbean	Middle East and North Africa	South Asia
China (Water Quality)