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## Credits

Indian Institute of Technology (IIT), Kanpur
Suman Ray Pramanik has created this Calculator and 50+ more calculators!
Softusvista Office (Pune), India
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## Reduced Pressure Solution

STEP 0: Pre-Calculation Summary
Formula Used
reduced_pressure = Pressure/Critical Pressure
PR = P/Pcr
This formula uses 2 Variables
Variables Used
Pressure - The pressure is defined as the physical force exerted on an object. It is symbolized by P. (Measured in Pascal)
Critical Pressure - Critical Pressure is the minimum pressure required to liquify a substance at the critical temperature. (Measured in Pascal)
STEP 1: Convert Input(s) to Base Unit
Pressure: 800 Pascal --> 800 Pascal No Conversion Required
Critical Pressure: 21800000 Pascal --> 21800000 Pascal No Conversion Required
STEP 2: Evaluate Formula
Substituting Input Values in Formula
PR = P/Pcr --> 800/21800000
Evaluating ... ...
PR = 3.6697247706422E-05
STEP 3: Convert Result to Output's Unit
3.6697247706422E-05 --> No Conversion Required
3.6697247706422E-05 <-- Reduced Pressure
(Calculation completed in 00.000 seconds)

## < 11 Other formulas that you can solve using the same Inputs

exact normal shock-wave maximum coefficient of pressure
pressure_coefficient_max = (2/(Specific Heat Ratio*(Mach Number^2)))*((Total Pressure/Pressure)-1) Go
Maximum Pressure coefficient
pressure_coefficient_max = (Total Pressure-Pressure)/(0.5*Density*(Freestream Velocity)^2) Go
Cavitation Number
cavitation_number = (Pressure-Vapour Pressure)/(mass density*(Fluid Velocity^2)/2) Go
Pseudo-Reduced Specific volume
pseudo_reduced_specific_volume = Specific Volume*Critical Pressure/([R]*Critical Temperature) Go
Compressibility Factor
compressibility_factor = Pressure*Specific Volume/([R]*Temperature) Go
Velocity of sound using dynamic pressure and density
speed_sound = sqrt((Specific Heat Ratio*Pressure)/Density) Go
Theoretical torque developed
theoretical_torque = (Pressure*Theoretical volumetric displacement*60)/(2*pi) Go
Non-dimensional pressure
non_dimensionalized_pressure = Pressure/(Density*(Freestream Velocity)^2) Go
Ideal Gas Law for Calculating Volume
ideal_gas_law_for_calculating_volume = [R]*Temperature/Pressure Go
Work Done in Isobaric Process
w_isobaric = Pressure*(Volume of gas 2-Volume of gas 1) Go
Buoyant Force
buoyant_force = Pressure*Area Go

## < 5 Other formulas that calculate the same Output

Reduced Pressure of real gas using Reduced Redlich–Kwong equation
reduced_pressure = ((3*Reduced Temperature)/(Reduced Molar Volume-0.26))-(1/(0.26*sqrt(Temperature)*Reduced Molar Volume*(Reduced Molar Volume+0.26))) Go
Reduced Pressure using Redlich–Kwong equation in terms of a and b
reduced_pressure = Pressure/((((2^(1/3))-1)^(7/3)*([R]^(1/3))*(Redlich–Kwong parameter a^(2/3)))/((3^(1/3))*(Redlich–Kwong parameter b^(5/3)))) Go
Reduced Pressure of real gas using Redlich–Kwong equation in terms of b only
reduced_pressure = Pressure/((0.08664*[R]*Critical Temperature)/Redlich–Kwong parameter b) Go
Reduced Pressure of real gas using Redlich–Kwong equation in terms of a only
reduced_pressure = Pressure/((0.42748*([R]^2)*(Critical Temperature^(5/2)))/Redlich–Kwong parameter a) Go
Reduced pressure of real gas using actual and critical pressure
reduced_pressure = Pressure/Critical Pressure Go

### Reduced Pressure Formula

reduced_pressure = Pressure/Critical Pressure
PR = P/Pcr

## What is Reduced Pressure?

Reduced Pressure is the ratio of the pressure of the fluid to its critical pressure. Its values are always greater than 0, and less than or equal to 1. It is often used for thermodynamic calculations.

## How to Calculate Reduced Pressure?

Reduced Pressure calculator uses reduced_pressure = Pressure/Critical Pressure to calculate the Reduced Pressure, Reduced Pressure is the ratio of the pressure of the fluid to its critical pressure. It is dimensionless. Reduced Pressure and is denoted by PR symbol.

How to calculate Reduced Pressure using this online calculator? To use this online calculator for Reduced Pressure, enter Pressure (P) and Critical Pressure (Pcr) and hit the calculate button. Here is how the Reduced Pressure calculation can be explained with given input values -> 3.670E-5 = 800/21800000.

### FAQ

What is Reduced Pressure?
Reduced Pressure is the ratio of the pressure of the fluid to its critical pressure. It is dimensionless and is represented as PR = P/Pcr or reduced_pressure = Pressure/Critical Pressure. The pressure is defined as the physical force exerted on an object. It is symbolized by P and Critical Pressure is the minimum pressure required to liquify a substance at the critical temperature.
How to calculate Reduced Pressure?
Reduced Pressure is the ratio of the pressure of the fluid to its critical pressure. It is dimensionless is calculated using reduced_pressure = Pressure/Critical Pressure. To calculate Reduced Pressure, you need Pressure (P) and Critical Pressure (Pcr). With our tool, you need to enter the respective value for Pressure and Critical Pressure 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 Reduced Pressure?
In this formula, Reduced Pressure uses Pressure and Critical Pressure. We can use 5 other way(s) to calculate the same, which is/are as follows -
• reduced_pressure = Pressure/((((2^(1/3))-1)^(7/3)*([R]^(1/3))*(Redlich–Kwong parameter a^(2/3)))/((3^(1/3))*(Redlich–Kwong parameter b^(5/3))))
• reduced_pressure = ((3*Reduced Temperature)/(Reduced Molar Volume-0.26))-(1/(0.26*sqrt(Temperature)*Reduced Molar Volume*(Reduced Molar Volume+0.26)))
• reduced_pressure = Pressure/Critical Pressure
• reduced_pressure = Pressure/((0.42748*([R]^2)*(Critical Temperature^(5/2)))/Redlich–Kwong parameter a)
• reduced_pressure = Pressure/((0.08664*[R]*Critical Temperature)/Redlich–Kwong parameter b)
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