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The gap of a tilted pad bearing is given by the expression
h = hi - a
where hi =20 x 10-6 m and a = 10-4
The length of the bearing is L = 10 -2 m and the pressures at the bearing inlet and outlet are the same.
While the tilted pad is fixed, the velocity of the horizontal slider below it is U = 1 m/s. Assume the
flow rate of the fluid and the pressure distribution in the bearing. Calculate the resulting force on the
pad.
Pad Geometry
> InletHeight:=20e-6:
> a:=1e-4:
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> SliderVelocity:=1:
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Lubricant Properties
> Density:=1e3:
> Viscosity:=1e-1:
Inputs to system variables
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Determine the height function for pad, h(x)
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0
x
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(1)
Assume boundary conditions are: p(0)=p(Lb)=0, determine pressure distribution
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(2)
Plot pressure distribution over bearing width
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300000
200000
100000
0
0
x
Determine the flow through the bearing
Find where the pressure is the greatest
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(3)
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(4)
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(5)
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(6)
Flow rate
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(7)
Force on the bearing
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(8)
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