Recovery Factor Calculator

✖Adiabatic wall temperature, is the temperature acquired by a wall in liquid or gas flow if the condition of thermal insulation is observed on it.ⓘ Adiabatic Wall Temperature [T_aw]			+10% -10%
✖The Static Temperature of Free Stream is defined as the temperature of the gas if it had no ordered motion and was not flowing.ⓘ Static Temperature of Free Stream [T_∞]			+10% -10%
✖Stagnation Temperature is defined as the temperature at a stagnation point in a fluid flow.ⓘ Stagnation Temperature [T_o]			+10% -10%

✖Recovery Factor is a dimensionless number defined by the ratio of difference in enthalpies.ⓘ Recovery Factor [r]

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Recovery Factor Solution

STEP 0: Pre-Calculation Summary

Formula Used

Recovery Factor = ((Adiabatic Wall Temperature-Static Temperature of Free Stream)/(Stagnation Temperature-Static Temperature of Free Stream))
r = ((T_aw-T_∞)/(T_o-T_∞))
This formula uses 4 Variables

Variables Used

Recovery Factor - Recovery Factor is a dimensionless number defined by the ratio of difference in enthalpies.
Adiabatic Wall Temperature - (Measured in Kelvin) - Adiabatic wall temperature, is the temperature acquired by a wall in liquid or gas flow if the condition of thermal insulation is observed on it.
Static Temperature of Free Stream - (Measured in Kelvin) - The Static Temperature of Free Stream is defined as the temperature of the gas if it had no ordered motion and was not flowing.
Stagnation Temperature - (Measured in Kelvin) - Stagnation Temperature is defined as the temperature at a stagnation point in a fluid flow.

STEP 1: Convert Input(s) to Base Unit

Adiabatic Wall Temperature: 410 Kelvin --> 410 Kelvin No Conversion Required
Static Temperature of Free Stream: 325 Kelvin --> 325 Kelvin No Conversion Required
Stagnation Temperature: 370 Kelvin --> 370 Kelvin No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

r = ((T_aw-T_∞)/(T_o-T_∞)) --> ((410-325)/(370-325))

Evaluating ... ...

r = 1.88888888888889

STEP 3: Convert Result to Output's Unit

1.88888888888889 --> No Conversion Required

FINAL ANSWER

1.88888888888889 ≈ 1.888889 <-- Recovery Factor

(Calculation completed in 00.004 seconds)

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University School of Chemical Technology-USCT (GGSIPU), New Delhi

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< Convection Heat Transfer Calculators

Reynolds Number given Mass Velocity

LaTeX Go Reynolds Number in Tube = (Mass Velocity*Diameter of Tube)/(Dynamic Viscosity)

Mass Flow Rate from Continuity Relation for One Dimensional Flow in Tube

LaTeX Go Mass Flow Rate = Density of Fluid*Cross Sectional Area*Mean velocity

Mass Velocity

LaTeX Go Mass Velocity = Mass Flow Rate/Cross Sectional Area

Mass Velocity given Mean Velocity

LaTeX Go Mass Velocity = Density of Fluid*Mean velocity

Recovery Factor Formula

LaTeX Go

Recovery Factor = ((Adiabatic Wall Temperature-Static Temperature of Free Stream)/(Stagnation Temperature-Static Temperature of Free Stream))
r = ((T_aw-T_∞)/(T_o-T_∞))

What is Convection?

Convection is the process of heat transfer by the bulk movement of molecules within fluids such as gases and liquids. The initial heat transfer between the object and the fluid takes place through conduction, but the bulk heat transfer happens due to the motion of the fluid. Convection is the process of heat transfer in fluids by the actual motion of matter. It happens in liquids and gases. It may be natural or forced. It involves a bulk transfer of portions of the fluid.

What are the Types of Convection?

There are two types of convection, and they are: Natural convection: When convection takes place due to buoyant force as there is a difference in densities caused by the difference in temperatures it is known as natural convection. Examples of natural convection are oceanic winds. Forced convection: When external sources such as fans and pumps are used for creating induced convection, it is known as forced convection. Examples of forced convection are using water heaters or geysers for instant heating of water and using a fan on a hot summer day.

How to Calculate Recovery Factor?

Recovery Factor calculator uses Recovery Factor = ((Adiabatic Wall Temperature-Static Temperature of Free Stream)/(Stagnation Temperature-Static Temperature of Free Stream)) to calculate the Recovery Factor, The Recovery Factor formula is defined as the function of adiabatic Wall Temperature, static temperature of free steam and stagnation temperature. In the actual case of a boundary-layer flow problem, the fluid is not brought to rest reversibly because the viscous action is basically an irreversible process in a thermodynamic sense. In addition, not all the free-stream kinetic energy is converted to thermal energy— part is lost as heat, and part is dissipated in the form of viscous work. To take into account the irreversibilities in the boundary-layer flow system, a recovery factor is defined. Recovery Factor is denoted by r symbol.

How to calculate Recovery Factor using this online calculator? To use this online calculator for Recovery Factor, enter Adiabatic Wall Temperature (T_aw), Static Temperature of Free Stream (T_∞) & Stagnation Temperature (T_o) and hit the calculate button. Here is how the Recovery Factor calculation can be explained with given input values -> 1.888889 = ((410-325)/(370-325)).

FAQ

What is Recovery Factor?

The Recovery Factor formula is defined as the function of adiabatic Wall Temperature, static temperature of free steam and stagnation temperature. In the actual case of a boundary-layer flow problem, the fluid is not brought to rest reversibly because the viscous action is basically an irreversible process in a thermodynamic sense. In addition, not all the free-stream kinetic energy is converted to thermal energy— part is lost as heat, and part is dissipated in the form of viscous work. To take into account the irreversibilities in the boundary-layer flow system, a recovery factor is defined and is represented as r = ((T_aw-T_∞)/(T_o-T_∞)) or Recovery Factor = ((Adiabatic Wall Temperature-Static Temperature of Free Stream)/(Stagnation Temperature-Static Temperature of Free Stream)). Adiabatic wall temperature, is the temperature acquired by a wall in liquid or gas flow if the condition of thermal insulation is observed on it, The Static Temperature of Free Stream is defined as the temperature of the gas if it had no ordered motion and was not flowing & Stagnation Temperature is defined as the temperature at a stagnation point in a fluid flow.

How to calculate Recovery Factor?

The Recovery Factor formula is defined as the function of adiabatic Wall Temperature, static temperature of free steam and stagnation temperature. In the actual case of a boundary-layer flow problem, the fluid is not brought to rest reversibly because the viscous action is basically an irreversible process in a thermodynamic sense. In addition, not all the free-stream kinetic energy is converted to thermal energy— part is lost as heat, and part is dissipated in the form of viscous work. To take into account the irreversibilities in the boundary-layer flow system, a recovery factor is defined is calculated using Recovery Factor = ((Adiabatic Wall Temperature-Static Temperature of Free Stream)/(Stagnation Temperature-Static Temperature of Free Stream)). To calculate Recovery Factor, you need Adiabatic Wall Temperature (T_aw), Static Temperature of Free Stream (T_∞) & Stagnation Temperature (T_o). With our tool, you need to enter the respective value for Adiabatic Wall Temperature, Static Temperature of Free Stream & Stagnation Temperature 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 Recovery Factor?

In this formula, Recovery Factor uses Adiabatic Wall Temperature, Static Temperature of Free Stream & Stagnation Temperature. We can use 2 other way(s) to calculate the same, which is/are as follows -

Recovery Factor = Prandtl Number^(1/2)
Recovery Factor = Prandtl Number^(1/3)

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