Changes between Version 8 and Version 9 of doc/app/plant_canopy_parameters
- Timestamp:
- Nov 6, 2014 12:59:46 PM (10 years ago)
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doc/app/plant_canopy_parameters
v8 v9 1 1 == Canopy Parameters == 2 [[TracNav(doc/app/partoc|nocollapse)]] ---UNDER CONSTRUCTION---\\\\2 [[TracNav(doc/app/partoc|nocollapse)]] 3 3 4 4 The canopy model embedded in PALM can be used to simulate the effect of vegetation canopies on a turbulent flow.\\ Thereby, the canopy is modeled as a porous viscous medium that removes momentum from the flow (Shaw & Schumann, 1992; Watanabe, 2004). The presentation [/wiki/doc/tut/job/canopy#Canopymodel "Canopy model"] provides detailed information on canopy-flow theory and the functionality of the canopy model. An example on how to model the flow across a simple canopy block can be found under exercise [/wiki/doc/tut/job/canopy#Exercise9:Canopyflow "Canopy flow"].\\\\ 5 5 6 6 Starting at '''revision 1485''', all parts of the canopy-model-related PALM code are modularized in module [/browser/palm/trunk/SOURCE/plant_canopy_model.f90 plant_canopy_model_mod]. In this context, the newly created package {{{canopy_par}}} now contains all canopy-related input parameters. This means that the canopy model is now steered using the NAMELIST {{{canopy_par}}}, and no longer with the {{{inipar}}}-NAMELIST. Hence, in order to automatically enable the canopy model, NAMELIST {{{canopy_par}}} and the respective canopy parameters must be added to the parameter file ({{{_p3d}}}), subsequently to the NAMELIST {{{d3par}}}. The setting of parameter plant_canopy = ''.T.'' is no longer required, since this is automatically done in PALM if the NAMELIST {{{canopy_par}}} exists in the parameter file. 7 \\\\\\\\\\ 8 '''NAMELIST group name: canopy_par''' \\ 7 \\\\\\\\\\\\ 8 '''NAMELIST group name: canopy_par''' \\\\ 9 9 10 10 ||='''Parameter Name''' =||='''[../fortrantypes FORTRAN Type]''' =||='''Default Value''' =||='''Explanation''' =|| … … 28 28 {{{ 29 29 #!Latex 30 \[ LAD( \frac{z}{H},\alpha,\beta) = LAI * f_{PDF}(\frac{z}{H},\alpha,\beta), \]30 \[ LAD(z,\alpha,\beta) = LAI * f_{PDF}(\frac{z}{H},\alpha,\beta) * H, \] 31 31 }}} 32 32 with the leaf area index LAI (LAI is the vertical integral over the LAD profile) being prescribed by canopy parameter [#lai_beta lai_beta].\\\\