A holistic microclimate model

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lbc-types [2012/07/02 00:42]
134.93.180.188 created
lbc-types [2017/11/10 09:09]
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-====== [LBC-TYPES] Section ====== 
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-===== Purpose ===== 
-The lateral boundary conditions types (LBC) define the way ENVI-met handles the model boundaries.\\ 
-As the normal prognostic equations of the model cannot be applied to grid points on the model borders, other, more simple methods are used to obtain the needed values there. 
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-Three different kinds of LBC can be selected in ENVI-met: 
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-  * **open LBC:**  The values of the next grid point close to the border are copied to the border each time step. 
-  * **forced (or closed) LBC:** The values of the one dimensional model are copied to the border. 
-  * **cyclic LBC:** The values of the downstream model border are copied to the upstream model border. 
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-You can choose the LBCs for temperature, humidity and for the turbulence variables. For the flow field, an open LBC will be used in any case. 
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-  * [[Click here for more information about LBC types]] 
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-You can choose the LBC types by adding the [LBC-TYPES] section to your .CF file: 
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-<file> 
-00: [LBC-TYPES] ____Types of lateral boundary conditions 
-01: LBC for T and q (1:open, 2:forced, 3:cyclic)  =1 
-02: LBC for TKE (1:open, 2:forced, 3:cyclic)      =2 
-</file> 
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-===== What do the lines mean? ===== 
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-=== 01: LBC for T and q (Default 1=open) === 
-LBC type for temperature and humidity. 1 is open, 2 is forced and 3 is cyclic. 
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-=== 02: LBC for TKE (Default 1=open) === 
-LBC type for the turbulence variables TKE (kinetic energy) and epsilon (dissipation rate). See above. 
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