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Static Enthalpy Ratio across Normal Shock Formula

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Static Enthalpy Ratio Across Normal Shock signifies the ratio of static enthalpies before and after passing through a normal shock wave. Check FAQs

H r = \frac{1 + (\frac{2 \cdot γ}{γ + 1}) \cdot ({M 1}^{2} - 1)}{(γ + 1) \cdot \frac{{M 1}^{2}}{2 + (γ - 1) \cdot {M 1}^{2}}}

H_r - Static Enthalpy Ratio Across Normal Shock?γ - Specific Heat Ratio?M₁ - Mach Number Ahead of Normal Shock?

Static Enthalpy Ratio across Normal Shock Example

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Here is how the Static Enthalpy Ratio across Normal Shock equation looks like with Values.

Here is how the Static Enthalpy Ratio across Normal Shock equation looks like with Units.

Here is how the Static Enthalpy Ratio across Normal Shock equation looks like.

1.3136 = \frac{1 + (\frac{2 \cdot 1.4}{1.4 + 1}) \cdot ({1.49}^{2} - 1)}{(1.4 + 1) \cdot \frac{{1.49}^{2}}{2 + (1.4 - 1) \cdot {1.49}^{2}}}

1.3136 = \frac{1 + (\frac{2 \cdot 1.4}{1.4 + 1}) \cdot ({1.49}^{2} - 1)}{(1.4 + 1) \cdot \frac{{1.49}^{2}}{2 + (1.4 - 1) \cdot {1.49}^{2}}}

1.3136 = \frac{1 + (\frac{2 \cdot 1.4}{1.4 + 1}) \cdot ({1.49}^{2} - 1)}{(1.4 + 1) \cdot \frac{{1.49}^{2}}{2 + (1.4 - 1) \cdot {1.49}^{2}}}

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Static Enthalpy Ratio across Normal Shock Solution

Follow our step by step solution on how to calculate Static Enthalpy Ratio across Normal Shock?

FIRST Step Consider the formula

H r = \frac{1 + (\frac{2 \cdot γ}{γ + 1}) \cdot ({M 1}^{2} - 1)}{(γ + 1) \cdot \frac{{M 1}^{2}}{2 + (γ - 1) \cdot {M 1}^{2}}}

Next Step Substitute values of Variables

∴

H r = \frac{1 + (\frac{2 \cdot 1.4}{1.4 + 1}) \cdot ({1.49}^{2} - 1)}{(1.4 + 1) \cdot \frac{{1.49}^{2}}{2 + (1.4 - 1) \cdot {1.49}^{2}}}

Next Step Prepare to Evaluate

∴

H r = \frac{1 + (\frac{2 \cdot 1.4}{1.4 + 1}) \cdot ({1.49}^{2} - 1)}{(1.4 + 1) \cdot \frac{{1.49}^{2}}{2 + (1.4 - 1) \cdot {1.49}^{2}}}

Next Step Evaluate

∴

H r = 1.3135708109995

LAST Step Rounding Answer

∴

H r = 1.3136

Static Enthalpy Ratio across Normal Shock Formula Elements

Variables

Static Enthalpy Ratio Across Normal Shock

Static Enthalpy Ratio Across Normal Shock signifies the ratio of static enthalpies before and after passing through a normal shock wave.

Symbol: H_r

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Static Enthalpy Ratio Across Normal Shock

Specific Heat Ratio

The Specific Heat Ratio is the ratio of the heat capacity at constant pressure to heat capacity at constant volume.

Symbol: γ

Measurement: NAUnit: Unitless

Note: Value should be between 1 to 2.

Formulas to find Specific Heat Ratio

Mach Number Ahead of Normal Shock

Mach Number Ahead of Normal Shock represents the velocity of a fluid or airflow relative to the speed of sound before encountering a normal shock wave.

Symbol: M₁

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Mach Number Ahead of Normal Shock

Other formulas in Property Change Across Shock Waves category

Go Shock Strength

Δp str = (\frac{2 \cdot γ}{1 + γ}) \cdot ({M 1}^{2} - 1)

Go Entropy Change across Normal Shock

ΔS = R \cdot \ln (\frac{p 01}{p 02})

Go Density Ratio across Normal Shock

ρ r = (γ + 1) \cdot \frac{{M 1}^{2}}{2 + (γ - 1) \cdot {M 1}^{2}}

Go Pressure Ratio across Normal Shock

P r = 1 + \frac{2 \cdot γ}{γ + 1} \cdot ({M 1}^{2} - 1)

How to Evaluate Static Enthalpy Ratio across Normal Shock?

Static Enthalpy Ratio across Normal Shock evaluator uses Static Enthalpy Ratio Across Normal Shock = (1+((2*Specific Heat Ratio)/(Specific Heat Ratio+1))*(Mach Number Ahead of Normal Shock^2-1))/((Specific Heat Ratio+1)*(Mach Number Ahead of Normal Shock^2)/(2+(Specific Heat Ratio-1)*Mach Number Ahead of Normal Shock^2)) to evaluate the Static Enthalpy Ratio Across Normal Shock, Static enthalpy ratio across normal shock formula is defined as the ratio of downstream to upstream temperature across the shock. It is a function of specific heat ratio and upstream Mach number. Static Enthalpy Ratio Across Normal Shock is denoted by H_r symbol.

How to evaluate Static Enthalpy Ratio across Normal Shock using this online evaluator? To use this online evaluator for Static Enthalpy Ratio across Normal Shock, enter Specific Heat Ratio (γ) & Mach Number Ahead of Normal Shock (M₁) and hit the calculate button.

FAQs on Static Enthalpy Ratio across Normal Shock

What is the formula to find Static Enthalpy Ratio across Normal Shock?

The formula of Static Enthalpy Ratio across Normal Shock is expressed as Static Enthalpy Ratio Across Normal Shock = (1+((2*Specific Heat Ratio)/(Specific Heat Ratio+1))*(Mach Number Ahead of Normal Shock^2-1))/((Specific Heat Ratio+1)*(Mach Number Ahead of Normal Shock^2)/(2+(Specific Heat Ratio-1)*Mach Number Ahead of Normal Shock^2)). Here is an example- 1.313571 = (1+((2*1.4)/(1.4+1))*(1.49^2-1))/((1.4+1)*(1.49^2)/(2+(1.4-1)*1.49^2)).

How to calculate Static Enthalpy Ratio across Normal Shock?

With Specific Heat Ratio (γ) & Mach Number Ahead of Normal Shock (M₁) we can find Static Enthalpy Ratio across Normal Shock using the formula - Static Enthalpy Ratio Across Normal Shock = (1+((2*Specific Heat Ratio)/(Specific Heat Ratio+1))*(Mach Number Ahead of Normal Shock^2-1))/((Specific Heat Ratio+1)*(Mach Number Ahead of Normal Shock^2)/(2+(Specific Heat Ratio-1)*Mach Number Ahead of Normal Shock^2)).

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Static Enthalpy Ratio across Normal Shock Formula

Static Enthalpy Ratio across Normal Shock Example

Static Enthalpy Ratio across Normal Shock Solution

Static Enthalpy Ratio across Normal Shock Formula Elements

Other formulas in Property Change Across Shock Waves category

How to Evaluate Static Enthalpy Ratio across Normal Shock?

FAQs on Static Enthalpy Ratio across Normal Shock

Variable Name