Changes between Version 8 and Version 9 of doc/app/plant_canopy_parameters


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Timestamp:
Nov 6, 2014 12:59:46 PM (10 years ago)
Author:
kanani
Comment:

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  • doc/app/plant_canopy_parameters

    v8 v9  
    11== Canopy Parameters ==
    2 [[TracNav(doc/app/partoc|nocollapse)]] ---UNDER CONSTRUCTION---\\\\
     2[[TracNav(doc/app/partoc|nocollapse)]]
    33
    44The 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"].\\\\
    55
    66Starting 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''' \\\\
    99
    1010||='''Parameter Name'''  =||='''[../fortrantypes FORTRAN Type]'''  =||='''Default Value'''  =||='''Explanation'''  =||
     
    2828{{{
    2929#!Latex
    30 \[ LAD(\frac{z}{H},\alpha,\beta) = LAI * f_{PDF}(\frac{z}{H},\alpha,\beta), \]
     30\[ LAD(z,\alpha,\beta) = LAI * f_{PDF}(\frac{z}{H},\alpha,\beta) * H, \]
    3131}}}
    3232with the leaf area index LAI (LAI is the vertical integral over the LAD profile) being prescribed by canopy parameter [#lai_beta lai_beta].\\\\