Hydraulic 2D TELEMAC - vcloarec/ReosProject GitHub Wiki

General settings for TELEMAC are set in the following window (see General settings of hydraulic 2D structure how to open this window).

To run TELEMAC simulation from Lekan, it is necessary to setup these settings. If Lekan is installed with the windows installer, TELEMAC engine is provided with Lekan and the user does not have to change information already present.

If the TELEMAC configuration does not support parallelization, the CPU Usage count has to be set to 1.

For the TELEMAC 2D solver, parameters are described below.

• Time step: time step use by the solver
• Output period of 2D results: number of time step between two 2D result dataset that will be recorded.
• Output period for hydrograph: number of time step between two hydrograph values that will be recorded

The user can choose following initial conditions types:

• Constant water level, no velocity: a constant static water level is apply on the whole mesh at the start of the simulation.
• From other hydraulic scheme: all the variable at the start of the simulation come from a result of another simulation of the same model run in another hydraulic scheme
• Interpolation line: for the whole mesh, static water level values interpolated from two values at the ends of a line drawn on the map, as in the following diagram:

• Equation use by the TELEMAC solver : Finite Element or Finite Volume

For now, it is not possible to change other numerical options from Lekan. Numercal options are hard coded and are the followings:

Finite Volume Equation

DESIRED COURANT NUMBER: 0.9

VARIABLE TIME-STEP: YES

Finite Element Equation

SCHEME FOR ADVECTION OF VELOCITIES: 1

IMPLICITATION FOR DEPTH: 0.6

IMPLICITATION FOR VELOCITY: 0.6

MAXIMUM NUMBER OF ITERATIONS FOR ADVECTION SCHEMES: 100

MASS-LUMPING ON H: 1.0

MASS-LUMPING ON VELOCITY: 1.0

SUPG OPTION: 1;1

If you want to add the possibility to change some numerical options, you can fill a ticket here: https://github.com/vcloarec/ReosProject/issues.