"A turbine is a rotary engine that extracts energy from fluid flow. The simplest turbines have one moving part, a rotor-blade assembly. Moving fluid acts on the blades to spin them and impart energy to the rotor. Early turbine examples are windmills and water wheels. Turbomachinery is an important subject for mechanical engineers working in several different industries, such as aerospace, power, process, HVAC, and water treatment and supply, as well as those working for the turbomachine manufacturers"-- Provided by publisher.