New option to define a sediment grain sizes variable along the model for COURLIS Bedload

New option to define a sediment grain size variable along the model for COURLIS bedload

Two new keywords will be added for this option :

• VARIABLE GRANULOMETRY OPTION (boolean) to activate the option
• GRANULOMETRY FILE (string) name of an ASCII file containing the definition of the grain sizes. See an example below

When a bedload transport law requires other grain diameters (mean diameter dm, d16 or d84) there are two ways :

1. they are determined from d50 (d16 = 0.5 * d50, dm = 1.1 * d50, d84 = 2.1 * d50)
2. they are specified in the granulometry file

WARNING This option is not a proper graded sediment model (with an active layer formulation). The sediment grain sizes are just "transformed" along the model.

This work is done on courlis_dev_grain_size_evol branch which will be integrated in courlis_dev branch

added module:courlis type:feature labels

assigned to @matthieu.secher

changed the description

@matthieu.secher Can this issue be closed after MR !70 (merged) or additional tests should be performed?