5 Replies Latest reply on May 21, 2018 10:36 AM by Jon Dahlgren

    Fan simulation problem - "Mass Flow is out of Fan curve's range"

    Jon Dahlgren

      So I was going to include a few fans in a flow simulation and the warning written in the title appeared. I tried to troubleshoot by only simulating a free fan in an empty domain, which still gave me the same warning. Now I need some help with how to resolve this.

       

      Below is the fan curve I've inserted into SW where I've marked the working point in the simulation with a red dot.

      FanCurve.PNG

      My entered fan curve at zero pressure is 0.0211389 m3/s.

      My working point in the simulation ends up at ~0.0211399 m3/s with a pressure difference of ~17 Pa (measured as the average value of the fans surfaces).

       

      Here is an example of the flow field with a mesh of ~1.3mio autorefined cells:

      FlowField.PNG

      Im using an internal axial fan with the dimensions and properties provided by the manufacturer in an external flow simulation.

       

      Any ideas of what can be wrong?