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Fluid Film Thickness in Terms of Flow of Lubricant Formula

GoFilm Thickness in Terms of Absolute Viscosity and Tangential Force Formula

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

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Oil film thickness is defined as the thickness of the oil film between the two parts in relative motion. Check FAQs

h = {(l \cdot 12 \cdot μ l \cdot \frac{Q slot}{b \cdot ΔP})}^{\frac{1}{3}}

h - Oil film thickness?l - Length of slot in direction of flow?μ_l - Dynamic Viscosity of Lubricant?Q_slot - Flow of lubricant from slot?b - Breadth of slot for oil flow?ΔP - Pressure difference between slot sides?

Fluid Film Thickness in Terms of Flow of Lubricant Example

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Here is how the Fluid Film Thickness in Terms of Flow of Lubricant equation looks like with Values.

Here is how the Fluid Film Thickness in Terms of Flow of Lubricant equation looks like with Units.

Here is how the Fluid Film Thickness in Terms of Flow of Lubricant equation looks like.

0.0197 = {(48 \cdot 12 \cdot 220 \cdot \frac{15}{49 \cdot 5.1})}^{\frac{1}{3}}

0.0197mm = {(48mm \cdot 12 \cdot 220cP \cdot \frac{15mm³/s}{49mm \cdot 5.1MPa})}^{\frac{1}{3}}

0.0197 = {(48 \cdot 12 \cdot 220 \cdot \frac{15}{49 \cdot 5.1})}^{\frac{1}{3}}

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Fluid Film Thickness in Terms of Flow of Lubricant Solution

Follow our step by step solution on how to calculate Fluid Film Thickness in Terms of Flow of Lubricant?

FIRST Step Consider the formula

h = {(l \cdot 12 \cdot μ l \cdot \frac{Q slot}{b \cdot ΔP})}^{\frac{1}{3}}

Next Step Substitute values of Variables

∴

h = {(48mm \cdot 12 \cdot 220cP \cdot \frac{15mm³/s}{49mm \cdot 5.1MPa})}^{\frac{1}{3}}

Next Step Convert Units

∴

h = {(0.048m \cdot 12 \cdot 0.22Pa*s \cdot \frac{1.5E-8m³/s}{0.049m \cdot 5.1E+6Pa})}^{\frac{1}{3}}

Next Step Prepare to Evaluate

∴

h = {(0.048 \cdot 12 \cdot 0.22 \cdot \frac{1.5E-8}{0.049 \cdot 5.1E+6})}^{\frac{1}{3}}

Next Step Evaluate

∴

h = 1.96663330218532E-05m

Next Step Convert to Output's Unit

∴

h = 0.0196663330218532mm

LAST Step Rounding Answer

∴

h = 0.0197mm

Fluid Film Thickness in Terms of Flow of Lubricant Formula Elements

Variables

Oil film thickness

Oil film thickness is defined as the thickness of the oil film between the two parts in relative motion.

Symbol: h

Measurement: LengthUnit: mm

Note: Value should be greater than 0.

Formulas to find Oil film thickness

Length of slot in direction of flow

Length of slot in direction of flow is the length of the rectangular slot through which viscous oil flows.

Symbol: l

Measurement: LengthUnit: mm

Note: Value should be greater than 0.

Formulas to find Length of slot in direction of flow

Dynamic Viscosity of Lubricant

The Dynamic Viscosity of Lubricant is the resistance to movement of one layer of fluid over another.

Symbol: μ_l

Measurement: Dynamic ViscosityUnit: cP

Note: Value should be greater than 0.

Formulas to find Dynamic Viscosity of Lubricant

Flow of lubricant from slot

Flow of lubricant from slot can be defined as the amount of lubricant flowing per unit time between the slots.

Symbol: Q_slot

Measurement: Volumetric Flow RateUnit: mm³/s

Note: Value should be greater than 0.

Formulas to find Flow of lubricant from slot

Breadth of slot for oil flow

Breadth of slot for oil flow is defined as the length of the rectangular slot in a plane perpendicular to the direction of flow.

Symbol: b

Measurement: LengthUnit: mm

Note: Value should be greater than 0.

Formulas to find Breadth of slot for oil flow

Pressure difference between slot sides

Pressure difference between slot sides is the difference in pressure intensities at two different sides of the slot.

Symbol: ΔP

Measurement: PressureUnit: MPa

Note: Value should be greater than 0.

Formulas to find Pressure difference between slot sides

Other Formulas to find Oil film thickness

Go Film Thickness in Terms of Absolute Viscosity and Tangential Force

h = μ o \cdot A po \cdot \frac{V m}{P}

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

h = {(Q \cdot A p \cdot \frac{μ l}{W \cdot q f})}^{\frac{1}{3}}

Other formulas in Film Thickness category

Go Minimum Film Thickness given Radius of Bearing

h ° = R - (e + r)

Go Eccentricity of Bearing in Terms of Minimum Film Thickness

e = R - (h ° + r)

Go Minimum Film Thickness Variable of Bearing

h min = \frac{h °}{c}

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

h ° = h min \cdot c

How to Evaluate Fluid Film Thickness in Terms of Flow of Lubricant?

Fluid Film Thickness in Terms of Flow of Lubricant evaluator uses 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) to evaluate the Oil film thickness, The Fluid Film Thickness in Terms of Flow of Lubricant formula is defined as one-third of the power of the ratio product of 12 times the value of length of the slot, viscosity of the lubricant, and flow of lubricant to the product of dimension b and pressure difference. Oil film thickness is denoted by h symbol.

How to evaluate Fluid Film Thickness in Terms of Flow of Lubricant using this online evaluator? To use this online evaluator for Fluid Film Thickness in Terms of Flow of Lubricant, enter Length of slot in direction of flow (l), Dynamic Viscosity of Lubricant (μ_l), Flow of lubricant from slot (Q_slot), Breadth of slot for oil flow (b) & Pressure difference between slot sides (ΔP) and hit the calculate button.

FAQs on Fluid Film Thickness in Terms of Flow of Lubricant

What is the formula to find Fluid Film Thickness in Terms of Flow of Lubricant?

The formula of Fluid Film Thickness in Terms of Flow of Lubricant is expressed as 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). Here is an example- 19.66633 = (0.048*12*0.22*1.5E-08/(0.049*5100000))^(1/3).

How to calculate Fluid Film Thickness in Terms of Flow of Lubricant?

With Length of slot in direction of flow (l), Dynamic Viscosity of Lubricant (μ_l), Flow of lubricant from slot (Q_slot), Breadth of slot for oil flow (b) & Pressure difference between slot sides (ΔP) we can find Fluid Film Thickness in Terms of Flow of Lubricant using the formula - 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).

What are the other ways to Calculate Oil film thickness?

Here are the different ways to Calculate Oil film thickness-

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

Can the Fluid Film Thickness in Terms of Flow of Lubricant be negative?

No, the Fluid Film Thickness in Terms of Flow of Lubricant, measured in Length cannot be negative.

Which unit is used to measure Fluid Film Thickness in Terms of Flow of Lubricant?

Fluid Film Thickness in Terms of Flow of Lubricant is usually measured using the Millimeter[mm] for Length. Meter[mm], Kilometer[mm], Decimeter[mm] are the few other units in which Fluid Film Thickness in Terms of Flow of Lubricant can be measured.

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Fluid Film Thickness in Terms of Flow of Lubricant Formula

​GoFilm Thickness in Terms of Absolute Viscosity and Tangential Force Formula

​GoFilm Thickness in Terms of Flow Coefficient and Flow of Lubricant Formula

Fluid Film Thickness in Terms of Flow of Lubricant Example

Fluid Film Thickness in Terms of Flow of Lubricant Solution

Fluid Film Thickness in Terms of Flow of Lubricant Formula Elements

Other Formulas to find Oil film thickness

Other formulas in Film Thickness category

How to Evaluate Fluid Film Thickness in Terms of Flow of Lubricant?

FAQs on Fluid Film Thickness in Terms of Flow of Lubricant

Variable Name

GoFilm Thickness in Terms of Absolute Viscosity and Tangential Force Formula

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