Telemac Modelling Notes

This weekend I worked with the 2D Flume models and explored using the different turbulence models (see pg 39 in Telemac manual for explanation). These models all use the hotstart (cas_hotstat.txt) result and run for 2 minutes.

• cas_flume_default.txt – no turbulence model specified
• cas_flume2_turb-1.txt – constant viscosity model specified
• cas_flume2_turb-2.txt – Elder model
• cas_flume2_turb-3-k-e.txt – K-Epsilon Model

Did not focus on the Elder model and the model did not run correctly. Was trying to determine the difference between the default (no turbulence set) and the constant viscosity model. I assume that these should be the same.

Was able to extract the shear velocity and the bed shear using Telemac and Blue Kenue. The shear velocity can be output by telemac using the variable, US.:
VARIABLES FOR GRAPHIC PRINTOUTS ='U,V,H,S,B,US'

From that you can calculate the bed shear in Blue Kenue using the calculator.:
1000 * A^2

Parameters for 1mm grain:

Material Number: 25.296
Ycr: 0.037
v*cr: 0.024 m/s
tcr: 0.598 N/m2