ṁ: This symbol represents the mass flow rate, which is the amount of mass passing through a given cross-sectional area per unit time. It’s typically measured in kilograms per second (kg/s) or other mass/time units.
- Density at throat (𝜌t) in kg/m^3
- Velocity at throat (ut) in m/s
- Cross-sectional area at throat (At) in m^2
- Mass flow rate (ṁ) in kg/s