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An Investigation Of Mist/Air Film Cooling With Application To Gas Turbine Airfoils, Lei Zhao
An Investigation Of Mist/Air Film Cooling With Application To Gas Turbine Airfoils, Lei Zhao
University of New Orleans Theses and Dissertations
Film cooling is a cooling technique widely used in high-performance gas turbines
to protect turbine airfoils from being damaged by hot flue gases. Film injection holes are
placed in the body of the airfoil to allow coolant to pass from the internal cavity to the
external surface. The ejection of coolant gas results in a layer or “film” of coolant gas
flowing along the external surface of the airfoil.
In this study, a new cooling scheme, mist/air film cooling is proposed and
investigated through experiments. Small amount of tiny water droplets with an average
diameter about 7 μm (mist) is …