Enter the enthalpy (J) and the velocity (m/s) into the calculator to determine the Stagnation Enthalpy. 

Stagnation Enthalpy Formula

The following formula is used to calculate the Stagnation Enthalpy. 

Hstag = H + V^2/2

  • Where Hstag is the Stagnation Enthalpy (J)
  • H is the enthalpy (J) 
  • V is the velocity (m/s) 

How to Calculate Stagnation Enthalpy?

The following two example problems outline how to calculate the Stagnation Enthalpy.

Example Problem #1:

  1. First, determine the enthalpy (J). In this example, the enthalpy (J) is given as 50.
  2. Next, determine the velocity (m/s). For this problem, the velocity (m/s) is given as 2.5.
  3. Finally, calculate the Stagnation Enthalpy using the equation above: 

Hstag = H + V^2/2

Inserting the values from above and solving the equation: 

Hstag =50 + 2.5^2/2 = 53.125 (J)


Example Problem #2: 

Using the same process as above, first define the variables required by the formula. In this case, these values are provided as the following:

enthalpy (J) = 30

velocity (m/s) = 3

Entering these values gives:

Hstag = 30 + 3^2/2 = 34.5 (J)