A holistic microclimate model

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intro:modelconcept [2021/12/12 19:41] – [Module Overview] enviadminintro:modelconcept [2023/02/26 18:25] (current) – enviadmin
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- **Wind field**  ENVI-met includes a full 3D Computational Fluid Dynamics [[wp>Computational_fluid_dynamics|(CFD)]] modell. It solves the [[wp>Reynolds-averaged_Navier–Stokes_equations|Reynolds-averaged non-hydrostatic Navier-Stokes equations]] for each grid in space and for each time step. The effects of vegetation are included as drag forces in the wind field. For detailed building physics simulation, the wind flow close to each facade and roof segment is calculated. With the new Single Wall feature, wind patterns inside complex or semi-open structures can be simulated as well. + **Wind field**  ENVI-met includes a full 3D Computational Fluid Dynamics [[wp>Computational_fluid_dynamics|(CFD)]] model. It solves the [[wp>Reynolds-averaged_Navier–Stokes_equations|Reynolds-averaged non-hydrostatic Navier-Stokes equations]] for each grid in space and for each time step. The effects of vegetation are included as drag forces in the wind field. For detailed building physics simulation, the wind flow close to each facade and roof segment is calculated. With the new Single Wall feature, wind patterns inside complex or semi-open structures can be simulated as well. 
  
 The wind flow is updated at given time intervals. ENVI-met also supports a real-time flow calculation which means that the flow field is treated as a normal prognostic variable and calculated each step. Due to the very small time steps needed here, this way of calculation need very powerful computers.  The wind flow is updated at given time intervals. ENVI-met also supports a real-time flow calculation which means that the flow field is treated as a normal prognostic variable and calculated each step. Due to the very small time steps needed here, this way of calculation need very powerful computers. 
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 ** Vegetation water supply ** ** Vegetation water supply **
-Plants are living organisms and will only contribute in positive way to the local microclimate, if enough water is available in the soil within the root zone. Together with the simulation of the soil water content and the new sophisticated 3D root model, the dynamic water supply of the plant and the resulting water extraction from the soil can be calculated. +Plants are living organisms and will only contribute in a positive way to the local microclimate, if enough water is available in the soil within the root zone. Together with the simulation of the soil water content and the 3D root model, the dynamic water supply of the plant and the resulting water extraction from the soil can be calculated. 
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 **TreePass: Understanding vegetation health requirements and simulate Wind Risk Assessment** **TreePass: Understanding vegetation health requirements and simulate Wind Risk Assessment**
-The impact of vegetation on the microclimate is only one side of the story. To grow and live, plants also need adequate local climate conditions fitting to their individual demand profile. Too much or too little sun, to heavy wind loads on the trees or stagnating air: Many aspects of the microclimate can interfere with the plants requirements and hinder a healthy and robust growth. Using our TreePass technology, the local growing conditions and the plants profiles can be matched to provide an optimal placement. Our wind risk assessment simulates the tree mechanics in order to assess the risk of wind and storm damage depending on the crown structure and the tree location. (TreePass Module to-come). +The impact of vegetation on the microclimate is only one side of the story. To grow and live, plants also need adequate local climate conditions fitting to their individual demand profile. Too much or too little sun, to heavy wind loads on the trees or stagnating air: Many aspects of the microclimate can interfere with the plants requirements and hinder a healthy and robust growth. Using our TreePass technology, the local growing conditions and the plants profiles can be matched to provide an optimal placement. Our wind risk assessment simulates the tree mechanics in order to assess the risk of wind and storm damage depending on the crown structure and the tree location.  \\ 
 +**The TreePass Module is still in development together with different cities and NGOs.**  
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 ** It's the format that matters...** ** It's the format that matters...**
-Starting with the WinterRelease 2019, we have added the option to export ENVI-met datafiles into the NetCDF format. This standard allows you to use ENVI-met datafiles directly in several other applications such as ESRI ArcMap or any other geospatial software. In addition, starting with Version 5, ENVI-met has also changed ALL outputfiles to be readable by standard CSV convnetions, including Python Pandas.+Starting with the WinterRelease 2019, we have added the option to export ENVI-met datafiles into the NetCDF format. This standard allows you to use ENVI-met datafiles directly in several other applications such as ESRI ArcMap or any other geospatial software. In addition, starting with Version 5, ENVI-met has also changed ALL outputfiles to be readable by standard CSV conventions, including Python Pandas.
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