AnsweredAssumed Answered

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

Question asked by Average User on Feb 27, 2018

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.

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



Can you point on my fault?


Thanks in advance for any help !!