Vinay Mishra
Indian Institute for Aeronautical Engineering and Information Technology (IIAEIT), Pune
Vinay Mishra has created this Calculator and 300+ more calculators!
Sai Venkata Phanindra Chary Arendra
Vallurupalli Nageswara Rao Vignana Jyothi Institute of Engineering and Technology (VNRVJIET), Hyderabad
Sai Venkata Phanindra Chary Arendra has verified this Calculator and 100+ more calculators!

4 Other formulas that you can solve using the same Inputs

Density before the shock formation for expansion wave
Density behind shock=Stagnation pressure ahead of shock/(1-((Specific Heat Ratio-1)/2)*(Normal velocity/Old speed of sound))^(2*Specific Heat Ratio/(Specific Heat Ratio-Time)) GO
Density before shock formation for compression wave
Density behind shock=Stagnation pressure ahead of shock/(1+((Specific Heat Ratio-1)/2)*(Normal velocity/Old speed of sound))^(2*Specific Heat Ratio/(Specific Heat Ratio-Time)) GO
Kinetic energy per mole using temperature of gas
Kinetic energy per mole=(3/2)*Specific gas constant*Temperature of Gas GO
Temperature of gas using kinetic energy per mole
Temperature of Gas=(2/3)*Kinetic energy per mole/Specific gas constant GO

1 Other formulas that calculate the same Output

Entropy change (Isothermal Process) (With given volumes)
Change in Entropy=Mass of Gas*[R]*ln(Final Volume of System/Initial Volume of System) GO

Entropy change across normal shock Formula

Change in Entropy=Specific gas constant*ln(Stagnation pressure ahead of shock/Stagnation pressure behind shock)
S<sub>2</sub> - S<sub>1</sub>=R*ln(p<sub>01</sub>/p<sub>02</sub>)
More formulas
Prandtl Condition GO
Characteristic Mach Number behind shock GO
Characteristic Mach number GO
Relation between Characteristic Mach number and Mach number GO
Mach Number behind the shock GO
Shock strength GO
Velocity behind a normal shock GO
Static Pressure ahead of normal shock using normal shock momentum equation GO
Static Pressure behind of normal shock using normal shock momentum equation GO
Density ahead of normal shock using normal shock momentum equation GO
Density behind normal shock using normal shock momentum equation GO
Enthalpy ahead of normal shock from normal shock energy equation GO
Enthalpy behind of normal shock from normal shock energy equation GO
Velocity ahead of normal shock from normal shock energy equation GO
Velocity behind of normal shock from normal shock energy equation GO
Velocity behind of normal shock by normal shock momentum equation GO
Velocity ahead of normal shock by normal shock momentum equation GO
Velocity upstream of shock using Prandtl relation GO
Critical speed of sound from Prandtl relation GO
Density ratio across a normal shock GO
Pressure ratio across a normal shock GO
Temperature ratio across a normal shock GO
Static enthalpy ratio across a normal shock GO
Stagnation pressure behind normal shock by Rayleigh Pitot tube formula GO
Density behind normal shock for given upstream density and Mach number GO
Static pressure behind normal shock for given upstream pressure and Mach number GO
Static temperature behind normal shock for given upstream temperature and Mach number GO
Static enthalpy behind normal shock for given upstream enthalpy and Mach number GO

What is entropy?

Entropy is a measure of the unavailable energy in a closed thermodynamic system that is also usually considered to be a measure of the system's disorder

How to Calculate Entropy change across normal shock?

Entropy change across normal shock calculator uses Change in Entropy=Specific gas constant*ln(Stagnation pressure ahead of shock/Stagnation pressure behind shock) to calculate the Change in Entropy, The Entropy change across normal shock is a function of stagnation pressures on either side of the shock. Change in Entropy and is denoted by S2 - S1 symbol.

How to calculate Entropy change across normal shock using this online calculator? To use this online calculator for Entropy change across normal shock, enter Specific gas constant (R), Stagnation pressure ahead of shock (p01) and Stagnation pressure behind shock (p02) and hit the calculate button. Here is how the Entropy change across normal shock calculation can be explained with given input values -> 198.7292 = 286.7056*ln(100/50).

FAQ

What is Entropy change across normal shock?
The Entropy change across normal shock is a function of stagnation pressures on either side of the shock and is represented as S2 - S1=R*ln(p01/p02) or Change in Entropy=Specific gas constant*ln(Stagnation pressure ahead of shock/Stagnation pressure behind shock). The specific gas constant of a gas or a mixture of gases is given by the molar gas constant divided by the molar mass of the gas or mixture, Stagnation pressure ahead of shock is the stagnation or total or pitot pressure before a shockwave has occured and Stagnation pressure behind shock is the stagnation or total or pitot pressure after the shock has occured.
How to calculate Entropy change across normal shock?
The Entropy change across normal shock is a function of stagnation pressures on either side of the shock is calculated using Change in Entropy=Specific gas constant*ln(Stagnation pressure ahead of shock/Stagnation pressure behind shock). To calculate Entropy change across normal shock, you need Specific gas constant (R), Stagnation pressure ahead of shock (p01) and Stagnation pressure behind shock (p02). With our tool, you need to enter the respective value for Specific gas constant, Stagnation pressure ahead of shock and Stagnation pressure behind shock 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 Change in Entropy?
In this formula, Change in Entropy uses Specific gas constant, Stagnation pressure ahead of shock and Stagnation pressure behind shock. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Change in Entropy=Mass of Gas*[R]*ln(Final Volume of System/Initial Volume of System)
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