Total temperature (), also known as stagnation temperature or total temperature at stagnation, is a thermodynamic concept used in fluid dynamics to describe the temperature of a fluid flow when both its internal energy and kinetic energy are taken into account. It represents the maximum temperature that a fluid could attain if it is brought to rest adiabatically (without heat transfer) and isentropically (without entropy change) from its current state. Total temperature is a crucial parameter in the analysis of high-speed flows, such as those encountered in aerodynamics and gas dynamics.
- is the total temperature.
- is the static temperature of the fluid.
- (T0/T) is the temperature ratio