-boundary_layer <flt:thickness> [<txt:unit>|<int:unitnr>]



Defines the thickness of a stagnant boundary layer at the surface for diffusion of gaseous components (see HYDRUS manual).



thickness

flt: Thickness of the stagnant boundary layer. If unit or unitnr are not given, the space unit defined in the HYDRUS graphical user interface is used.

unit

txt: Unit of the thickness, mm, cm or me. Default: Space unit of the HYDRUS graphical user interface

unitnr

int: Value indicating the unit: 1: mm; 2: cm; 3: m.



See gas_phase