A holistic microclimate model

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intro:modelconept [2017/11/10 09:25] – external edit 127.0.0.1intro:modelconept [2023/05/26 15:05] (current) – enviadmin
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 ===== Overview in a Nutshell===== ===== Overview in a Nutshell=====
  
-ENVI-met V4 is a holistic three-dimensional non-hydrostatic model for the simulation of surface-plant-air interactions not only limited to, but very often used to simulate urban environments and to asses the effects of green architecture visions. +ENVI-met is a holistic three-dimensional non-hydrostatic model for the simulation of surface-plant-air interactions not only limited to, but very often used to simulate urban environments and to asses the effects of green architecture visions. 
 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 1 to 5 seconds. This resolution allows to analyze small-scale interactions between individual buildings, surfaces and plants. 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 1 to 5 seconds. This resolution allows to analyze small-scale interactions between individual buildings, surfaces and plants.
  
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 ===== Software Versions ===== ===== Software Versions =====
-Like always, the **basic** version of ENVI-met V4 is free and comes along as a complete model including the complete simulation core for non-commercial applications. In addition to the free version (**"ENVI-met Basic"**), there is  the **Professional Version** and the **Expert Version** which include advanced modelling features and the newest simulation techniques. While the **Basic** version can be downloaded and used freely based on the Creative Commons License  BY-NC-SA, the **Professional Version** needs to be licensed and the **Expert** version is only available through our research and consulting work [[apps:envimet|Read more...]]+The **LITE/TRIAL** version of ENVI-met is free and comes along as a complete model including the basic simulation core for non-commercial applications, but is restricted in domian and calculation features. In addition to the free version (**"ENVI-met LITE"**), there are  the **BUSINESS Version** and **SCIENCE Version** which include advanced modelling features and the newest simulation techniques. While the **LITE** version can be downloaded and used freely based on the Creative Commons License  BY-NC-SA, the **BUSINESS Version** and  **SCIENCE Version** need to be licensed and are not free.
  
  
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 ** Full 3D building geometry & Single walls** ** Full 3D building geometry & Single walls**
-Complex buildings and other structures can be constructed in full 3D with no limitations in complexity as far as the cubic base structure allows. This allows the simulation of semi-open spaces such as the soccer stadium shown in the icon and in this example. Moreover, ENVI-met Expert allows the usage of single thin walls that can be applied to any grid which can be used to represent spaces wich are enclosed by walls but do not behave like a building e.g. bus stop shelters, shading structures...+Complex buildings and other structures can be constructed in full 3D with no limitations in complexity as far as the cubic base structure allows. This allows the simulation of semi-open spaces such as the soccer stadium shown in the icon and in this example. Moreover, ENVI-met allows the usage of single thin walls that can be applied to any grid which can be used to represent spaces wich are enclosed by walls but do not behave like a building e.g. bus stop shelters, shading structures...
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 ** High resolution building physics** ** High resolution building physics**
-Each wall and roof segment in ENVI-met is represented by its own thermodynamical model consisting of 7 prognostic calculation nodes. The temperature of the outside node is updated continuously with respect to the meteorological variables at the facade and the thermal state of the buildings and other objects within the view range of the facade/roof element considered. The thermal state of the inner wall nodes is calculated from the physical properties assigned to the wall/roof based on [[wp>Fourier_heat_conduction_equation|Fourier's law of heat conduction]].  [[architecture:example_facadetemp|→More...]]+Each wall and roof segment in ENVI-met is represented by its own thermodynamical model consisting of 7 prognostic calculation nodes. The temperature of the outside node is updated continuously with respect to the meteorological variables at the facade and the thermal state of the buildings and other objects within the view range of the facade/roof element considered. The thermal state of the inner wall nodes is calculated from the physical properties assigned to the wall/roof based on [[wp>Fourier_heat_conduction_equation|Fourier's law of heat conduction]]. 
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