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--- architecture:start [2012/08/30 00:01] – [ENVI-met Model Architecture] marenlie
+++ architecture:start [2014/08/03 00:03] (current) – removed enviadmin
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-====== ENVI-met Model Architecture ======
-This page gives an overview over the technical aspects and modules used in ENVI-met Version 3.
-^[[Atmosphere]]^[[Soil System]]^[[Vegetation]]^[[Surfaces]]^[[Biometeorology]]^[[Behind the Scenes]]^
-|Wind|Temperature|Foliage Temperature|Ground Surface Fluxes|PMV-Value| The Mathematics|
-|Temperature|Water Flux|Heat Exchange|Fluxes at Walls / Roofs|The climBOTs| |
-|Vapor Turbulence Pollutants|Water Bodies|Vapor Exchange|Heat Transfer through Walls| | |
-| | |Water Interception| | | |
-| | |Water Transport| | | |
-===== Introduction =====
-ENVI-met is a three-dimensional non-hydrostatic model for the simulation of surface-plant-air interactions not only for but especially inside urban environments. It is designed for microscale with a typical horizontal resolution from 0.5 to 10 m and a typical time frame of 24 to 48 hours with a time step of 10 sec at maximum. This resolution allows to analyze small-scale interactions between individual buildings, surfaces and plants.
-The model calculation includes:
-  * Shortwave and longwave radiation fluxes with respect to shading, reflection and re-radiation from building systems and the vegetation
-  * Transpiration, Evaporation and sensible heat flux from the vegetation into the air including full simulation of all plant physical parameters (e.g. photosynthesis rate)
-  * Surface and wall temperature for each grid point and wall
-  * Water- and heat exchange inside the soil system
-  * Calculation of biometeorological parameters like Mean Radiant Temperature or Fanger's //Predicted Mean Vote (PMV) - Value//
-  * Dispersion of inert gases and particles including sedimentation of particles at leafs and surfaces
-Buildings, vegetation, soils/ surfaces and pollutant sources can be placed inside the model area. Besides of natural and artificial surfaces, the model is also able to handle water bodies.
-ENVI-met runs on WINDOWS NT/2000/XP platforms with a minimum of 128MByte RAM. Multiple-Processors Systems are not supported (=do not run faster than single ones).The exact memory requirements depend on the number of grid points used.
-A rough overview of the memory requirements is:
-^60 x 60 x 30 Grids^  128 Mbytes^
-|  **80 x 80 x 30 Grids**  |  **128 Mbytes**  |
-^120 x 120 x 30 Grids^ 256 Mbytes^
-|  **130 x 130 x 30 Grids**  |  **256 Mbytes**  |
-^200 x 200 x 25 Grids^ 512 Mbytes^
-|  **250 x 250 x 25 Grids**  |  **1 GByte**  |