The formula for calculating nozzle flow separation depends on the specific characteristics of the flow and the geometry of the nozzle. However, a common approach to modeling flow separation in nozzles is to use the Reynolds number (Re) and the Mach number (Ma) at the nozzle exit.
Where:
- is the critical Reynolds number for flow separation.
- is the density of the fluid.
- is the velocity of the fluid at the nozzle exit.
- is the characteristic length of the nozzle (e.g., diameter for a cylindrical nozzle).
- is the dynamic viscosity of the fluid.