Reference Temperature given Emissivity Calculator

✖The Dynamic Viscosity of a fluid is the measure of its resistance to flow when an external force is applied.ⓘ Dynamic Viscosity [μ_viscosity]			+10% -10%
✖Emissivity is the ability of an object to emit infrared energy. Emissivity can have a value from 0 (shiny mirror) to 1.0 (blackbody). Most organic or oxidized surfaces have emissivity close to 0.95.ⓘ Emissivity [ε]			+10% -10%
✖Freestream Density is the mass per unit volume of air far upstream of an aerodynamic body at a given altitude.ⓘ Freestream Density [ρ_∞]			+10% -10%
✖Radius of Nose is any of the line segments from its center to its perimeter, and in more modern usage, it is also their length.ⓘ Radius of Nose [r_nose]			+10% -10%

✖Reference Temperature is the Temperature at which the values of the physical properties of a fluid are chosen in dimensionless equations for the heat transfer, and resistance.ⓘ Reference Temperature given Emissivity [T_ref]

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Reference Temperature given Emissivity

Formula

`"T"_{"ref"} = sqrt("μ"_{"viscosity"}/("ε"^2*"ρ"_{"∞"}*"r"_{"nose"}))`

Example

`"8.076484K"=sqrt("375P"/(("0.95")^2*"1.225kg/m³"*"0.52m"))`

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Reference Temperature given Emissivity Solution

STEP 0: Pre-Calculation Summary

Formula Used

Reference Temperature = sqrt(Dynamic Viscosity/(Emissivity^2*Freestream Density*Radius of Nose))
T_ref = sqrt(μ_viscosity/(ε^2*ρ_∞*r_nose))
This formula uses 1 Functions, 5 Variables

Functions Used

sqrt - A square root function is a function that takes a non-negative number as an input and returns the square root of the given input number., sqrt(Number)

Variables Used

Reference Temperature - (Measured in Kelvin) - Reference Temperature is the Temperature at which the values of the physical properties of a fluid are chosen in dimensionless equations for the heat transfer, and resistance.
Dynamic Viscosity - (Measured in Pascal Second) - The Dynamic Viscosity of a fluid is the measure of its resistance to flow when an external force is applied.
Emissivity - Emissivity is the ability of an object to emit infrared energy. Emissivity can have a value from 0 (shiny mirror) to 1.0 (blackbody). Most organic or oxidized surfaces have emissivity close to 0.95.
Freestream Density - (Measured in Kilogram per Cubic Meter) - Freestream Density is the mass per unit volume of air far upstream of an aerodynamic body at a given altitude.
Radius of Nose - (Measured in Meter) - Radius of Nose is any of the line segments from its center to its perimeter, and in more modern usage, it is also their length.

STEP 1: Convert Input(s) to Base Unit

Dynamic Viscosity: 375 Poise --> 37.5 Pascal Second (Check conversion here)
Emissivity: 0.95 --> No Conversion Required
Freestream Density: 1.225 Kilogram per Cubic Meter --> 1.225 Kilogram per Cubic Meter No Conversion Required
Radius of Nose: 0.52 Meter --> 0.52 Meter No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

T_ref = sqrt(μ_viscosity/(ε^2*ρ_∞*r_nose)) --> sqrt(37.5/(0.95^2*1.225*0.52))

Evaluating ... ...

T_ref = 8.07648354179812

STEP 3: Convert Result to Output's Unit

8.07648354179812 Kelvin --> No Conversion Required

FINAL ANSWER

8.07648354179812 ≈ 8.076484 Kelvin <-- Reference Temperature

(Calculation completed in 00.004 seconds)

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Created by Rahul

Dayanada Sagar college of Engineering (DSCE), banglore

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National Institute Of Technology (NIT), Hamirpur

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< 11 Computational Fluid Dynamic Solutions Calculators

Emissivity given Reference Temperature

Go Emissivity = sqrt(Dynamic Viscosity/(Freestream Density*sqrt(Reference Temperature)*Radius of Nose))

Nose Radius of Coordinate System given Reference Temperature

Go Radius of Nose = Dynamic Viscosity/(Emissivity^2*Freestream Density*sqrt(Reference Temperature))

Freestream Density given Reference Temperature

Go Freestream Density = Dynamic Viscosity/(Emissivity^2*sqrt(Reference Temperature)*Radius of Nose)

Reference Temperature given Emissivity

Go Reference Temperature = sqrt(Dynamic Viscosity/(Emissivity^2*Freestream Density*Radius of Nose))

Reference Viscosity Given Reference Temperature

Go Dynamic Viscosity = Emissivity^2*Freestream Density*sqrt(Reference Temperature)*Radius of Nose

Emissivity

Go Emissivity = sqrt(Dynamic Viscosity/(Freestream Density*Freestream Velocity*Radius of Nose))

Nose Radius of Coordinate System

Go Radius of Nose = Dynamic Viscosity/(Emissivity^2*Freestream Density*Freestream Velocity)

Freestream Velocity

Go Freestream Velocity = Dynamic Viscosity/(Emissivity^2*Freestream Density*Radius of Nose)

Freestream Density

Go Freestream Density = Dynamic Viscosity/(Emissivity^2*Freestream Velocity*Radius of Nose)

Reference Viscosity

Go Dynamic Viscosity = Emissivity^2*Freestream Density*Freestream Velocity*Radius of Nose

Reference Temperature given Freestream Velocity

Go Reference Temperature = Freestream Velocity^2

Reference Temperature given Emissivity Formula

Reference Temperature = sqrt(Dynamic Viscosity/(Emissivity^2*Freestream Density*Radius of Nose))
T_ref = sqrt(μ_viscosity/(ε^2*ρ_∞*r_nose))

What is emissivity?

Emissivity is the measure of an object's ability to emit infrared energy. Emitted energy indicates the temperature of the object. Emissivity can have a value from 0

How to Calculate Reference Temperature given Emissivity?

Reference Temperature given Emissivity calculator uses Reference Temperature = sqrt(Dynamic Viscosity/(Emissivity^2*Freestream Density*Radius of Nose)) to calculate the Reference Temperature, The Reference Temperature given Emissivity formula is defined as the square root of dynamic viscosity divided by the square of emissivity, freestream density, and nose radius. Reference Temperature is denoted by T_ref symbol.

How to calculate Reference Temperature given Emissivity using this online calculator? To use this online calculator for Reference Temperature given Emissivity, enter Dynamic Viscosity (μ_viscosity), Emissivity (ε), Freestream Density (ρ_∞) & Radius of Nose (r_nose) and hit the calculate button. Here is how the Reference Temperature given Emissivity calculation can be explained with given input values -> 1.332008 = sqrt(37.5/(0.95^2*1.225*0.52)).

FAQ

What is Reference Temperature given Emissivity?

The Reference Temperature given Emissivity formula is defined as the square root of dynamic viscosity divided by the square of emissivity, freestream density, and nose radius and is represented as T_ref = sqrt(μ_viscosity/(ε^2*ρ_∞*r_nose)) or Reference Temperature = sqrt(Dynamic Viscosity/(Emissivity^2*Freestream Density*Radius of Nose)). The Dynamic Viscosity of a fluid is the measure of its resistance to flow when an external force is applied, Emissivity is the ability of an object to emit infrared energy. Emissivity can have a value from 0 (shiny mirror) to 1.0 (blackbody). Most organic or oxidized surfaces have emissivity close to 0.95, Freestream Density is the mass per unit volume of air far upstream of an aerodynamic body at a given altitude & Radius of Nose is any of the line segments from its center to its perimeter, and in more modern usage, it is also their length.

How to calculate Reference Temperature given Emissivity?

The Reference Temperature given Emissivity formula is defined as the square root of dynamic viscosity divided by the square of emissivity, freestream density, and nose radius is calculated using Reference Temperature = sqrt(Dynamic Viscosity/(Emissivity^2*Freestream Density*Radius of Nose)). To calculate Reference Temperature given Emissivity, you need Dynamic Viscosity (μ_viscosity), Emissivity (ε), Freestream Density (ρ_∞) & Radius of Nose (r_nose). With our tool, you need to enter the respective value for Dynamic Viscosity, Emissivity, Freestream Density & Radius of Nose 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 Reference Temperature?

In this formula, Reference Temperature uses Dynamic Viscosity, Emissivity, Freestream Density & Radius of Nose. We can use 1 other way(s) to calculate the same, which is/are as follows -

Reference Temperature = Freestream Velocity^2

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