We were
discussing the basic concept of kinetic
energy correction factor and momentum correction factor, power
absorbed in viscous flow, viscous resistance of journal bearings and viscous resistance of foot- step bearings in the subject of fluid mechanics, in our
recent posts.
Now we
will go ahead to find out the power required to overcome the viscous resistance
of collar bearings, in the subject of fluid mechanics, with the help of this
post.
Power required overcoming the viscous resistance of collar bearings
A collar
bearing is provided at any position along the shaft and bears the axial load on
a mating surface. Surface of the collar may be plane normal to the shaft or of
conical shape.
Following figure
shows the collar bearing, where the face of the collar will be separated from
bearing surface by an oil film of uniform thickness.
Let us
consider the following data from above figure.
N = Speed
of the shaft in rpm
R1
= Internal radius of the collar
R2
= External radius of the collar
t =
Thickness of the oil film
Power required overcoming the viscous resistance of collar bearings
will be given by following formula as mentioned here.
Now we
will go ahead to start a new topic in the subject of fluid mechanics i.e. Turbulent flow basics and difference between laminar flow and turbulent flow .
Do you
have any suggestions? Please write in comment box.
Reference:
Fluid
mechanics, By R. K. Bansal
Image
courtesy: Google
No comments:
Post a Comment