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Film temperature Formula

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Film temperature is the temperature value of the Film. Check FAQs

Tf = \frac{T w + T∞}{2}

Tf - Film temperature?T_w - Plate Surface Temperature?T∞ - Free Stream Fluid Temperature?

Film temperature Example

With values

With units

Only example

Here is how the Film temperature equation looks like with Values.

Here is how the Film temperature equation looks like with Units.

Here is how the Film temperature equation looks like.

50 = \frac{30 + 70}{2}

50°C = \frac{30°C + 70°C}{2}

50 = \frac{30 + 70}{2}

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Film temperature Solution

Follow our step by step solution on how to calculate Film temperature?

FIRST Step Consider the formula

Tf = \frac{T w + T∞}{2}

Next Step Substitute values of Variables

∴

Tf = \frac{30°C + 70°C}{2}

Next Step Convert Units

∴

Tf = \frac{303.15K + 343.15K}{2}

Next Step Prepare to Evaluate

∴

Tf = \frac{303.15 + 343.15}{2}

Next Step Evaluate

∴

Tf = 323.15K

LAST Step Convert to Output's Unit

∴

Tf = 50°C

Film temperature Formula Elements

Variables

Film temperature

Film temperature is the temperature value of the Film.

Symbol: Tf

Measurement: TemperatureUnit: °C

Note: Value can be positive or negative.

Formulas to find Film temperature

Plate Surface Temperature

Plate surface temperature is the temperature at the surface of the plate.

Symbol: T_w

Measurement: TemperatureUnit: °C

Note: Value can be positive or negative.

Formulas to find Plate Surface Temperature

Free Stream Fluid Temperature

Free stream fluid temperature is the temperature of the fluid in free stream velocity.

Symbol: T∞

Measurement: TemperatureUnit: °C

Note: Value can be positive or negative.

Formulas to find Free Stream Fluid Temperature

Other formulas in Laminar Flow category

Go Hydrodynamic boundary layer thickness at distance X from leading edge

𝛿hx = 5 \cdot x \cdot {Re x}^{- 0.5}

Go Thermal boundary layer thickness at distance X from leading edge

𝛿Tx = 𝛿hx \cdot {Pr}^{- 0.333}

Go Displacement thickness

𝛿 d = \frac{𝛿hx}{3}

Go Momentum thickness

θ = \frac{𝛿hx}{7}

How to Evaluate Film temperature?

Film temperature evaluator uses Film temperature = (Plate Surface Temperature+Free Stream Fluid Temperature)/2 to evaluate the Film temperature, Film temperature formula is defined as the average temperature of the wall and the free stream, which is a critical parameter in analyzing heat transfer and fluid flow over a flat plate, providing a crucial insight into the thermal behavior of the system. Film temperature is denoted by Tf symbol.

How to evaluate Film temperature using this online evaluator? To use this online evaluator for Film temperature, enter Plate Surface Temperature (T_w) & Free Stream Fluid Temperature (T∞) and hit the calculate button.

FAQs on Film temperature

What is the formula to find Film temperature?

The formula of Film temperature is expressed as Film temperature = (Plate Surface Temperature+Free Stream Fluid Temperature)/2. Here is an example- -223.15 = (303.15+343.15)/2.

How to calculate Film temperature?

With Plate Surface Temperature (T_w) & Free Stream Fluid Temperature (T∞) we can find Film temperature using the formula - Film temperature = (Plate Surface Temperature+Free Stream Fluid Temperature)/2.

Can the Film temperature be negative?

Yes, the Film temperature, measured in Temperature can be negative.

Which unit is used to measure Film temperature?

Film temperature is usually measured using the Celsius[°C] for Temperature. Kelvin[°C], Fahrenheit[°C], Rankine[°C] are the few other units in which Film temperature can be measured.

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Film temperature Formula

Film temperature Example

Film temperature Solution

Film temperature Formula Elements

Other formulas in Laminar Flow category

How to Evaluate Film temperature?

FAQs on Film temperature

Variable Name