how to fix reverse flow in fluent

JoschJosch Member


can anyone tell me how to fix reverse flow at pressure inlet and pressure outlet?

My Mesh is consists of tetrahedral elements and the skweness is good. 

I use two pressure Inlets and one pressure outlet.

I want to simulate the negativ pressure in a jet pump.


Thanks in advance



  • RobRob UKForum Coordinator
    edited May 2019

    Pressure boundaries mean that the mass flow (and potentially) density are part of the solution rather than the set up. This means it's very sensitive to the initial conditions. 

    If you can start the model off with velocity inlets and then alter to pressure bounds once it's running. 

    Reverse flow can also be because the domain isn't big enough.


    I'll also move to Fluids as it's unlikely to be a meshing problem. 

  • DrAmineDrAmine GermanyForum Coordinator
    edited May 2019
    To add wrong ini pressure field and other more things. Add more details about Geo Mesh and models.
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