Michele: EnergyPlus has two objects to allow users to handle weather station height and its variation: Site:WeatherStation and Site:HeightVariation. Please see Input Output Reference for detailed information. Hope this helps. Lixing Gu From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] Hi everybody, I performed some wind tunnel tests and now I have to calculate the wind pressure coefficients based on the generated pressure data. However, I have a doubt about the reference height used to calculate the wind speed (dynamic pressure). What is the reference height that I could use in this calculation? I got through some literature references and some of them indicated the building height as an alternative. Is that the best choice? I will simulate natural ventilation using Airflow Network group. So, I will input those data in AirflowNetwork:MultiZone: WindPressureCoefficientValues. Thank you so much, __._,_.___ Posted by: Lixing Gu <gu@xxxxxxxxxxxx> EnergyPlus support is found at: http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx The EnergyPlus web site is found at: http://www.energyplus.net/ The group web site is: http://groups.yahoo.com/group/EnergyPlus_Support/ Attachments are currently allowed but be mindful that not everyone has a high speed connection. Limit attachments to small files. EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button. __,_._,___ |