I have found resources that explain the impact of a 95 deg elbow at the inlet and outlet of a centrifugal fan, but nothing else. I know a sloped inlet and/or a sloped outlet duct would cause a non-uniform velocity profile, which would cause performance losses. But I am hoping there is a way to calculate this loss, or at the very least be able to reference experiment figures.
Below is a very crude diagram of what I mean by "sloped inlet duct". I didn't show the inlet duct going into the center of the centrifugal fan but just know that is also part of the arrangement.
View attachment 5151
Below is a very crude diagram of what I mean by "sloped inlet duct". I didn't show the inlet duct going into the center of the centrifugal fan but just know that is also part of the arrangement.
View attachment 5151
