Film Thickness in Terms of Flow Coefficient and Flow of Lubricant Calculator

✖The Flow of Lubricant can be defined as the amount of lubricant flowing per unit time between the surfaces.ⓘ Flow of Lubricant [Q]			+10% -10%
✖Total projected area of bearing pad is the total area of the bearing pad that is projected onto the bearing surface.ⓘ Total Projected Area of Bearing Pad [A_p]			+10% -10%
✖The Dynamic Viscosity of Lubricant is the resistance to movement of one layer of fluid over another.ⓘ Dynamic Viscosity of Lubricant [μ_l]			+10% -10%
✖Load Acting on Sliding Bearing is the force acting onto the sliding journal bearing.ⓘ Load Acting on Sliding Bearing [W]			+10% -10%
✖The Flow Coefficient is a relative measure of the efficiency at allowing fluid flow.ⓘ Flow Coefficient [q_f]			+10% -10%

✖Oil film thickness is defined as the thickness of the oil film between the two parts in relative motion.ⓘ Film Thickness in Terms of Flow Coefficient and Flow of Lubricant [h]

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Formula

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Film Thickness in Terms of Flow Coefficient and Flow of Lubricant

Formula

`"h" = ("Q"*"A"_{"p"}*"μ"_{"l"}/("W"*"q"_{"f"}))^(1/3)`

Example

`"0.019537mm"=("1600mm³/s"*"450mm²"*"220cP"/("1800N"*"11.80"))^(1/3)`

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Film Thickness in Terms of Flow Coefficient and Flow of Lubricant Solution

STEP 0: Pre-Calculation Summary

Formula Used

Oil film thickness = (Flow of Lubricant*Total Projected Area of Bearing Pad*Dynamic Viscosity of Lubricant/(Load Acting on Sliding Bearing*Flow Coefficient))^(1/3)
h = (Q*A_p*μ_l/(W*q_f))^(1/3)
This formula uses 6 Variables

Variables Used

Oil film thickness - (Measured in Meter) - Oil film thickness is defined as the thickness of the oil film between the two parts in relative motion.
Flow of Lubricant - (Measured in Cubic Meter per Second) - The Flow of Lubricant can be defined as the amount of lubricant flowing per unit time between the surfaces.
Total Projected Area of Bearing Pad - (Measured in Square Meter) - Total projected area of bearing pad is the total area of the bearing pad that is projected onto the bearing surface.
Dynamic Viscosity of Lubricant - (Measured in Pascal Second) - The Dynamic Viscosity of Lubricant is the resistance to movement of one layer of fluid over another.
Load Acting on Sliding Bearing - (Measured in Newton) - Load Acting on Sliding Bearing is the force acting onto the sliding journal bearing.
Flow Coefficient - The Flow Coefficient is a relative measure of the efficiency at allowing fluid flow.

STEP 1: Convert Input(s) to Base Unit

Flow of Lubricant: 1600 Cubic Millimeter per Second --> 1.6E-06 Cubic Meter per Second (Check conversion here)
Total Projected Area of Bearing Pad: 450 Square Millimeter --> 0.00045 Square Meter (Check conversion here)
Dynamic Viscosity of Lubricant: 220 Centipoise --> 0.22 Pascal Second (Check conversion here)
Load Acting on Sliding Bearing: 1800 Newton --> 1800 Newton No Conversion Required
Flow Coefficient: 11.8 --> No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

h = (Q*A_p*μ_l/(W*q_f))^(1/3) --> (1.6E-06*0.00045*0.22/(1800*11.8))^(1/3)

Evaluating ... ...

h = 1.95374054045119E-05

STEP 3: Convert Result to Output's Unit

1.95374054045119E-05 Meter -->0.0195374054045119 Millimeter (Check conversion here)

FINAL ANSWER

0.0195374054045119 ≈ 0.019537 Millimeter <-- Oil film thickness

(Calculation completed in 00.020 seconds)

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Created by Vaibhav Malani

National Institute of Technology (NIT), Tiruchirapalli

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Verified by Anshika Arya

National Institute Of Technology (NIT), Hamirpur

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< 11 Film Thickness Calculators

Fluid Film Thickness in Terms of Flow of Lubricant

Go Oil film thickness = (Length of slot in direction of flow*12*Dynamic Viscosity of Lubricant*Flow of lubricant from slot/(Breadth of slot for oil flow*Pressure difference between slot sides))^(1/3)

Film Thickness in Terms of Flow Coefficient and Flow of Lubricant

Go Oil film thickness = (Flow of Lubricant*Total Projected Area of Bearing Pad*Dynamic Viscosity of Lubricant/(Load Acting on Sliding Bearing*Flow Coefficient))^(1/3)

Film Thickness in Terms of Absolute Viscosity and Tangential Force

Go Oil film thickness = Dynamic viscosity of oil*Area of moving plate on oil*Velocity of Moving Plate on Oil/Tangential force on moving plate

Eccentricity of Bearing in Terms of Minimum Film Thickness

Go Eccentricity in bearing = Radius of Bearing-(Minimum Film Thickness+Radius of Journal)

Minimum Film Thickness given Radius of Bearing

Go Minimum Film Thickness = Radius of Bearing-(Eccentricity in bearing+Radius of Journal)

Eccentricity Ratio in Terms of Minimum Film Thickness of Bearing

Go Eccentricity Ratio of Journal Bearing = 1-(Minimum Film Thickness/Radial clearance for bearing)

Minimum Film Thickness of bearing in Terms of Eccentricity Ratio

Go Minimum Film Thickness = Radial clearance for bearing*(1-Eccentricity Ratio of Journal Bearing)

Minimum Film Thickness in Terms of Minimum Film Thickness Variable of Bearing

Go Minimum Film Thickness = Minimum Film Thickness Variable*Radial clearance for bearing

Minimum Film Thickness Variable of Bearing

Go Minimum Film Thickness Variable = Minimum Film Thickness/Radial clearance for bearing

Eccentricity Ratio of Bearing in Terms of Minimum Film Thickness Variable

Go Eccentricity Ratio of Journal Bearing = 1-Minimum Film Thickness Variable

Minimum Film Thickness Variable of Bearing in Terms of Eccentricity Ratio

Go Minimum Film Thickness Variable = 1-Eccentricity Ratio of Journal Bearing

Film Thickness in Terms of Flow Coefficient and Flow of Lubricant Formula

Oil film thickness = (Flow of Lubricant*Total Projected Area of Bearing Pad*Dynamic Viscosity of Lubricant/(Load Acting on Sliding Bearing*Flow Coefficient))^(1/3)
h = (Q*A_p*μ_l/(W*q_f))^(1/3)

What is Sliding Contact Bearing?

The sliding contact bearings in which the sliding action is along the circumference of a circle or an arc of a circle and carrying radial loads are known as journal or sleeve bearings.

How to Calculate Film Thickness in Terms of Flow Coefficient and Flow of Lubricant?

Film Thickness in Terms of Flow Coefficient and Flow of Lubricant calculator uses Oil film thickness = (Flow of Lubricant*Total Projected Area of Bearing Pad*Dynamic Viscosity of Lubricant/(Load Acting on Sliding Bearing*Flow Coefficient))^(1/3) to calculate the Oil film thickness, The Film Thickness in Terms of Flow Coefficient and Flow of Lubricant formula is defined as one-third of the power of the ratio of the product of the flow of lubricant, total projected area, and viscosity of lubricant to the product of load acting on the bearing and flow coefficient. Oil film thickness is denoted by h symbol.

How to calculate Film Thickness in Terms of Flow Coefficient and Flow of Lubricant using this online calculator? To use this online calculator for Film Thickness in Terms of Flow Coefficient and Flow of Lubricant, enter Flow of Lubricant (Q), Total Projected Area of Bearing Pad (A_p), Dynamic Viscosity of Lubricant (μ_l), Load Acting on Sliding Bearing (W) & Flow Coefficient (q_f) and hit the calculate button. Here is how the Film Thickness in Terms of Flow Coefficient and Flow of Lubricant calculation can be explained with given input values -> 19.53741 = (1.6E-06*0.00045*0.22/(1800*11.8))^(1/3).

FAQ

What is Film Thickness in Terms of Flow Coefficient and Flow of Lubricant?

The Film Thickness in Terms of Flow Coefficient and Flow of Lubricant formula is defined as one-third of the power of the ratio of the product of the flow of lubricant, total projected area, and viscosity of lubricant to the product of load acting on the bearing and flow coefficient and is represented as h = (Q*A_p*μ_l/(W*q_f))^(1/3) or Oil film thickness = (Flow of Lubricant*Total Projected Area of Bearing Pad*Dynamic Viscosity of Lubricant/(Load Acting on Sliding Bearing*Flow Coefficient))^(1/3). The Flow of Lubricant can be defined as the amount of lubricant flowing per unit time between the surfaces, Total projected area of bearing pad is the total area of the bearing pad that is projected onto the bearing surface, The Dynamic Viscosity of Lubricant is the resistance to movement of one layer of fluid over another, Load Acting on Sliding Bearing is the force acting onto the sliding journal bearing & The Flow Coefficient is a relative measure of the efficiency at allowing fluid flow.

How to calculate Film Thickness in Terms of Flow Coefficient and Flow of Lubricant?

The Film Thickness in Terms of Flow Coefficient and Flow of Lubricant formula is defined as one-third of the power of the ratio of the product of the flow of lubricant, total projected area, and viscosity of lubricant to the product of load acting on the bearing and flow coefficient is calculated using Oil film thickness = (Flow of Lubricant*Total Projected Area of Bearing Pad*Dynamic Viscosity of Lubricant/(Load Acting on Sliding Bearing*Flow Coefficient))^(1/3). To calculate Film Thickness in Terms of Flow Coefficient and Flow of Lubricant, you need Flow of Lubricant (Q), Total Projected Area of Bearing Pad (A_p), Dynamic Viscosity of Lubricant (μ_l), Load Acting on Sliding Bearing (W) & Flow Coefficient (q_f). With our tool, you need to enter the respective value for Flow of Lubricant, Total Projected Area of Bearing Pad, Dynamic Viscosity of Lubricant, Load Acting on Sliding Bearing & Flow Coefficient and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Oil film thickness?

In this formula, Oil film thickness uses Flow of Lubricant, Total Projected Area of Bearing Pad, Dynamic Viscosity of Lubricant, Load Acting on Sliding Bearing & Flow Coefficient. We can use 2 other way(s) to calculate the same, which is/are as follows -

Oil film thickness = Dynamic viscosity of oil*Area of moving plate on oil*Velocity of Moving Plate on Oil/Tangential force on moving plate
Oil film thickness = (Length of slot in direction of flow*12*Dynamic Viscosity of Lubricant*Flow of lubricant from slot/(Breadth of slot for oil flow*Pressure difference between slot sides))^(1/3)

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