Yes, my reduction area is a lot. It could have been worse if I had put a needle in the center. I'm going to put some stator vanes after the fan rotor and will let you know on the results. I understand that a multi-stage compressor would help but I'm dealing with an electric system. I...
Yes, it would be interested to see airflows and turbulence. Unfortunately, I made it from super high density foam in white that when sanded you get a smooth surface. Maybe If I made from clear plastic. Without the tapered section and the small outlet, a lot of air flows as there is no obstacle...
Are you referring to the profile curve of the fan blades? I basically built one from scratch as seen in this video
At full power, air flows backwards and faster than out the small opening. Logically, I would think all air will flow from the back of the small hole and faster similar to a water...
Thanks for the info. I assume I need to open the duct to more than .2". I have tried lowering the fan speed with a power regulator and see if this reduces surge, but at lower speeds I get the same result linearly. It seems that lowering the speed just cuts down the airflow and I don't get an...
Greetings,
I recently joined this forum to get some feedback on this project I'm working and which I have searched for an answer without any luck.
My goal is to get the most airflow velocity in an outlet of a ducted fan. I'm using a 20,000RMP fan that is pushing air from a ~1.25" inlet to...