66 | | ||[=#PA0041 PA0041] ||simulating a plant canopy requires a non-zero drag coefficient, given value is canopy_drag_coeff = 0.0 || When simulating a plant canopy, a non-zero [../canpar#canopy_drag_coeff canopy_drag_coeff] must be set in the parameter file under NAMELIST {{{&canopy_par}}}. The [/wiki/doc/app/canpar canopy model] in PALM adds an additional sink/source terms to the momentum equations, the prognostic equation for temperature, and the subgrid scale turbulent kinetic energy equation. In case of [../inipar#humidity humidity] = ''.TRUE.'' or [../inipar#passive_scalar passive_scalar] = ''.TRUE.'', an additional source/sink term is added to the prognostic equation of the respective scalar.\\ If [../canpar#canopy_drag_coeff canopy_drag_coeff] = 0.0, the additional terms equal zero and there would be no effect on the flow. || |
| 66 | ||[=#PA0041 PA0041] ||plant_canopy = .TRUE. requires a non-zero drag coefficient, given value is canopy_drag_coeff = 0.0 || When simulating a plant canopy, a non-zero [../canpar#canopy_drag_coeff canopy_drag_coeff] must be set in the parameter file under NAMELIST {{{&canopy_par}}}. The [/wiki/doc/app/canpar canopy model] in PALM adds an additional sink/source terms to the momentum equations, the prognostic equation for temperature, and the subgrid scale turbulent kinetic energy equation. In case of [../inipar#humidity humidity] = ''.TRUE.'' or [../inipar#passive_scalar passive_scalar] = ''.TRUE.'', an additional source/sink term is added to the prognostic equation of the respective scalar.\\ If [../canpar#canopy_drag_coeff canopy_drag_coeff] = 0.0, the additional terms equal zero and there would be no effect on the flow. || |