Viscosity in Terms of Flow Coefficient and Flow of Lubricant Calculator

✖The Flow Coefficient is a relative measure of the efficiency at allowing fluid flow.ⓘ Flow Coefficient [q_f]			+10% -10%
✖Load Acting on Sliding Bearing is the force acting onto the sliding journal bearing.ⓘ Load Acting on Sliding Bearing [W]			+10% -10%
✖Oil film thickness is defined as the thickness of the oil film between the two parts in relative motion.ⓘ Oil film thickness [h]			+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%
✖Flow of Lubricant across Bearing Pad is defined as the volume of lubricant oil passing through the flowing per unit time between the surfaces.ⓘ Flow of Lubricant across Bearing Pad [Q_bp]			+10% -10%

✖The Dynamic Viscosity of Lubricant is the resistance to movement of one layer of fluid over another.ⓘ Viscosity in Terms of Flow Coefficient and Flow of Lubricant [μ_l]

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Viscosity in Terms of Flow Coefficient and Flow of Lubricant Solution

STEP 0: Pre-Calculation Summary

Formula Used

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

Variables Used

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.
Flow Coefficient - The Flow Coefficient is a relative measure of the efficiency at allowing fluid flow.
Load Acting on Sliding Bearing - (Measured in Newton) - Load Acting on Sliding Bearing is the force acting onto the sliding journal bearing.
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.
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.
Flow of Lubricant across Bearing Pad - (Measured in Cubic Meter per Second) - Flow of Lubricant across Bearing Pad is defined as the volume of lubricant oil passing through the flowing per unit time between the surfaces.

STEP 1: Convert Input(s) to Base Unit

Flow Coefficient: 11.8 --> No Conversion Required
Load Acting on Sliding Bearing: 1800 Newton --> 1800 Newton No Conversion Required
Oil film thickness: 0.02 Millimeter --> 2E-05 Meter (Check conversion here)
Total Projected Area of Bearing Pad: 450 Square Millimeter --> 0.00045 Square Meter (Check conversion here)
Flow of Lubricant across Bearing Pad: 1717 Cubic Millimeter per Second --> 1.717E-06 Cubic Meter per Second (Check conversion here)

STEP 2: Evaluate Formula

Substituting Input Values in Formula

μ_l = q_f*W*(h^3)/(A_p*Q_bp) --> 11.8*1800*(2E-05^3)/(0.00045*1.717E-06)

Evaluating ... ...

μ_l = 0.219918462434479

STEP 3: Convert Result to Output's Unit

0.219918462434479 Pascal Second -->219.918462434479 Centipoise (Check conversion here)

FINAL ANSWER

219.918462434479 ≈ 219.9185 Centipoise <-- Dynamic Viscosity of Lubricant

(Calculation completed in 00.020 seconds)

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Home » Engineering » Mechanical » Machine Design » Design of Sliding Contact Bearing » Viscosity and Density of Lubricant » Viscosity in Terms of Flow Coefficient and Flow of Lubricant

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Created by Vaibhav Malani

National Institute of Technology (NIT), Tiruchirapalli

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National Institute Of Technology (NIT), Hamirpur

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Viscosity in Terms of Flow Coefficient and Flow of Lubricant Formula

LaTeX Go

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 Viscosity in Terms of Flow Coefficient and Flow of Lubricant?

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

How to calculate Viscosity in Terms of Flow Coefficient and Flow of Lubricant using this online calculator? To use this online calculator for Viscosity in Terms of Flow Coefficient and Flow of Lubricant, enter Flow Coefficient (q_f), Load Acting on Sliding Bearing (W), Oil film thickness (h), Total Projected Area of Bearing Pad (A_p) & Flow of Lubricant across Bearing Pad (Q_bp) and hit the calculate button. Here is how the Viscosity in Terms of Flow Coefficient and Flow of Lubricant calculation can be explained with given input values -> 219918.5 = 11.8*1800*(2E-05^3)/(0.00045*1.717E-06).

FAQ

What is Viscosity in Terms of Flow Coefficient and Flow of Lubricant?

The Viscosity in Terms of Flow Coefficient and Flow of Lubricant formula is defined as the ratio of the product of flow coefficient, the load acting on the bearing, and the cube of film thickness to the product of total projected area and flow of the lubricant and is represented as μ_l = q_f*W*(h^3)/(A_p*Q_bp) or Dynamic Viscosity of Lubricant = Flow Coefficient*Load Acting on Sliding Bearing*(Oil film thickness^3)/(Total Projected Area of Bearing Pad*Flow of Lubricant across Bearing Pad). The Flow Coefficient is a relative measure of the efficiency at allowing fluid flow, Load Acting on Sliding Bearing is the force acting onto the sliding journal bearing, Oil film thickness is defined as the thickness of the oil film between the two parts in relative motion, Total projected area of bearing pad is the total area of the bearing pad that is projected onto the bearing surface & Flow of Lubricant across Bearing Pad is defined as the volume of lubricant oil passing through the flowing per unit time between the surfaces.

How to calculate Viscosity in Terms of Flow Coefficient and Flow of Lubricant?

The Viscosity in Terms of Flow Coefficient and Flow of Lubricant formula is defined as the ratio of the product of flow coefficient, the load acting on the bearing, and the cube of film thickness to the product of total projected area and flow of the lubricant is calculated using Dynamic Viscosity of Lubricant = Flow Coefficient*Load Acting on Sliding Bearing*(Oil film thickness^3)/(Total Projected Area of Bearing Pad*Flow of Lubricant across Bearing Pad). To calculate Viscosity in Terms of Flow Coefficient and Flow of Lubricant, you need Flow Coefficient (q_f), Load Acting on Sliding Bearing (W), Oil film thickness (h), Total Projected Area of Bearing Pad (A_p) & Flow of Lubricant across Bearing Pad (Q_bp). With our tool, you need to enter the respective value for Flow Coefficient, Load Acting on Sliding Bearing, Oil film thickness, Total Projected Area of Bearing Pad & Flow of Lubricant across Bearing Pad 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 Dynamic Viscosity of Lubricant?

In this formula, Dynamic Viscosity of Lubricant uses Flow Coefficient, Load Acting on Sliding Bearing, Oil film thickness, Total Projected Area of Bearing Pad & Flow of Lubricant across Bearing Pad. We can use 3 other way(s) to calculate the same, which is/are as follows -

Dynamic Viscosity of Lubricant = Kinematic viscosity of lubricant oil*Density of Lubricating Oil
Dynamic Viscosity of Lubricant = 2*pi*Sommerfeld Number of Journal Bearing*Unit bearing pressure for bearing/(((Radius of Journal/Radial clearance for bearing)^2)*Journal Speed)
Dynamic Viscosity of Lubricant = Pressure difference between slot sides*Breadth of slot for oil flow*(Oil film thickness^3)/(12*Length of slot in direction of flow*Flow of lubricant from slot)

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