laajennushyötysuhteen
Laajennushyötysuhde, often translated as expansion ratio, is a term used in thermodynamics and fluid dynamics, particularly in the context of nozzles and turbines. It refers to the ratio of the exit area to the throat area of a convergent-divergent nozzle or the ratio of the exit area to the inlet area of a turbine stage. Understanding this ratio is crucial for efficiently converting thermal or pressure energy into kinetic energy or mechanical work.
For a convergent-divergent nozzle designed to accelerate a fluid, the expansion ratio is a key parameter that
In the context of turbines, the expansion ratio across a stage influences the amount of work extracted.
The optimal expansion ratio is dependent on various factors, including the fluid properties, the operating pressure,