The ratio of static temperature to the freestream temperature, often denoted as , is a dimensionless parameter used in fluid dynamics and aerodynamics to describe the temperature variation at a specific point in a fluid flow relative to the freestream temperature.
- Ratio of static to the freestream temperature (T/T∞)
- Specific heat ratio (γ)
- Freestream speed of sound (a∞) in m/s
- Horizontal Perturbation Velocity (û) in m/s
- Freestream velocity (V∞) in m/s
- Vertical Perturbation Velocity (v̂) in m/s