9/8/2023 0 Comments Envi 4.5 free downloadThereby, the model area height is achieved with less Z cells. A stretching factor to be specified in percent is then applied to the size of each previous cell: cell sizes thus quickly increase. ![]() Use the telescoping option to stretch cells that are not in scope, i.e., starting above highest building height, we will only stretch air cells. We now have several solutions to decrease the amount of Z cells and thus the simulation time: However, if very tall buildings (for example 100 m height) are included in the model area, 100 Z cells in a 2 m resolution would be needed to accurately represent the model area and still obtain high resolution results at the pedestrian level (approximately at 1 m above the surface). ![]() In general, the model area height should at least be twice the height of the highest building. Most ENVI-met studies analyze outdoor thermal comfort at pedestrian level, thus needing a high vertical resolution.
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