0 Replies Latest reply on Feb 28, 2018 4:41 AM by Average User

    low efficiency of a Radial Fan :( My first simulation project

    Average User

      I'm diving into SW Flow Simulation, and created simple radial fan model as a first project. I've made basic calculations,.. and

      I need your help Looks like I have an error in model, calculations or flow settings.

      I've got the efficiency of my backward curved impeller as of ~25% ? A lot of tutorials says that it should be 80+%.

      Besides the overall efficiency, very important for this study is intake pressure (suction power, SG Av Dynamic Pressure) - it is also very low for such type of impeller

      Here is .zip with the assembly, parts and sim. results.

      https://drive.google.com/file/d/1qlFtU1AoQCCpz8wkfVN6PZr-l4xTf4s8/view?usp=sharing

      Here is the screenshot+my calculations (are they right?)

      fan.jpg

       

      Can you point on my fault?

       

      Thanks in advance for any help !!