Florian Michelin

Hi, Here are a few things to look at: Look at the number of airways at the bottom of the screen: if the number does not change after simulation it is a visibility issue. Try: right click and show all and see if the airways come back. The airway might be hidden for some of the following reasons. Check if the View>Hide Zero Flow is turned on, it is possible that those airways are imported with flow from previous simulation but no flow after running the simulation. Some of the value range might be hidden. If the number of airways is smaller after simulation: Are you copying the airways at the same place as other airways in the model? If 2 airways are at the same position, one will be deleted after simulation and the one of the airway could be hidden. If none of the above works, you might want to get the latest version from our website: http://www.ventsim.com/download/current-downloads/ If it is still an issue, send us the model at support@ventsim.com. Florian

Stages is one of the most useful tools in VentSim and is now part of PumpSim 3! The stages allow the user to save different stage or milestone of the project in one model. It saves not having to use several model for the same project. One element can belong to several stages, the modification to a stage can be either spread to the other stage or stay only for this specific stage. You can also allocate element to the desired stage. The stages can also be used to simulate specific scenario, you can keep your main model as is but having another stage with a different pump and see how the system react to the new setup. Give it a try!