Stagnation enthalpy

Stagnation enthalpy is a measure of how much energy is in a gas or fluid. It is equal to the total energy of a gas or fluid, including both its internal energy and its kinetic energy (energy of motion). The internal energy is the energy that is stored inside the molecules of the gas or fluid, and the kinetic energy is the energy of their motion. Stagnation enthalpy is important for understanding how different gases and fluids interact with each other, and how to measure their energy.