TELEMAC‑2D solves the two‑dimensional Saint‑Venant equations for free‑surface flows using the finite element or finite volume method and a computational mesh of triangular elements. It can perform simulations in transient and stationary conditions. TELEMAC-2D can take into account various physical phenomena:

• Propagation of long waves, taking into account non-linear effects
• Bed friction
• Influence of Coriolis force
• Influence of meteorological factors: atmospheric pressure and wind
• Turbulence
• Torrent and river flows
• Influence of horizontal temperature or salinity gradients on density
• Cartesian or spherical coordinates for large domains
• Dry areas in the computational domain: intertidal flats and flood plains
• Current entrainment and diffusion of a tracer, with source and sink terms
• Monitoring of floats and Lagrangian drifts
• Treatment of singular points: sills, dikes, pipes.
• Advection-diffusion of tracers such as temperature, salinity or concentrations of material substances.

Simulated flood event on Garonne river (France) (J.-P. Travert)

Numerical simulation of the Malpasset dam-break flood wave