The Power Turbine and Its Diffuser 690032

In a free-shaft gas turbine engine the static efficiency is a more realistic figure of merit for the power turbine than the frequently used total efficiency. The influence on these two efficiencies of design work coefficient and flow coefficient is examined. The effect of an annular diffuser located behind the power turbine for partial recovery of the otherwise-unavailable kinetic energy is discussed, both at design and off-design operating conditions. Test results from power turbines and exhaust diffusers serve to illustrate the application of some of the concepts considered.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 40% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.