The ratio of temperatures behind the wave to the ahead of the wave is a measure of the change in temperature that occurs when a fluid flows across a wave, such as a shock wave or an expansion wave. The temperature ratio is defined as the ratio of the temperature behind the wave (T2) to the temperature ahead of the wave (T1). The temperature ratio depends on the type, strength, and orientation of the wave, as well as the properties and speed of the fluid.
- Ratio of temperatures behind the wave to the ahead of the wave (T2/T1)
- Pressure ratio across the wave (p2/p1)
- Ratio of density behind the wave to the density ahead of the wave (ρ2/ρ1)