fixednozzle
A fixed nozzle is a nozzle whose geometry is fixed and does not change during operation. In fixed-nozzle configurations, the throat and exit dimensions are set during manufacture and are not adjustable in service. This contrasts with variable-geometry nozzles, which can change cross-sectional area or expansion ratio to adapt to different operating conditions.
Fixed nozzles are used in a variety of applications where stable, repeatable performance is required. Common
Design and performance of a fixed nozzle are governed by the upstream pressure, the nozzle’s area ratio
Advantages of fixed nozzles include simplicity, ruggedness, low cost, and reliable repeatability. Limitations involve limited adaptability