Vacuum Pumpdown – No inlet

    • RaoulM

      Hi I'm new to Ansys Fluent and I'm trying to make a simple 2D model of a vacuum tank pumpdown and to analyse the pressure differences between certain geometries inside the tank during the process. I am encountering a problem that because I have no inlet due to the fact that its a vacuum tank, the simulation will not run. How do I go about fixing this. I am mainly concerned with the initial pumpdown, so the Knudsen number will be below 1. 

    • Rob
      Ansys Employee

      What material density are you using?

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