|Jan8-13, 08:47 AM||#1|
Can any one help with this Fluid mechanics question please?
1. The problem statement, all variables and given/known data
A shaft of diameter 74.9mm rotates at 1400rpm in a bearing which is of diameter 75.03 mm and 75mm in length. The annular space between the shaft and the bearing is filled with oil of viscosity 0.096 kg/ms.By assuming a uniform velocity gradient in the oil, determine the power required to overcome the viscous resistance in the bearing.
2. Relevant equations
Thats the equation i have been using, where l is the difference between the radius of the outer ring and inner ring (i.e. bearing and shaft)
3. The attempt at a solution
When i plug in the values i get:
this gives 143.12N
Presuming that this is all ok i then have no idea how to get to a power?
|Jan8-13, 09:10 AM||#2|
How much torque would this force produce on the shaft when it is turning at 1400 rpm? Once you know the torque, you can find the power.
|Jan8-13, 09:22 AM||#3|
Ah yeah thanks got the right answer :)
|Similar Threads for: Can any one help with this Fluid mechanics question please?|
|Simple question about object submerged in a fluid (fluid Mechanics)||Mechanical Engineering||1|
|Fluid Mechanics question||Engineering, Comp Sci, & Technology Homework||5|
|Fluid Mechanics Question||Advanced Physics Homework||1|
|Fluid mechanics question||Introductory Physics Homework||3|
|Fluid Mechanics question||General Physics||7|