Measurements in Film Cooling Flows with Lateral Injection A THESIS SUBMITTED TO THE FACULTY OF THE GRADUATE SCHOOL OF THE UNIVERSITY OF MINNESOTA BY Richard W. Kaszeta IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE
نویسنده
چکیده
Measurements of mean velocity, turbulence intensity, and turbulent shear stresses are presented for the mixing region of a film cooling situation in which the coolant is laterally injected. Measurements are performed using triple-wire anemometry so that all three mean velocity components are documented. Such measurements also give Reynolds stress terms in the flow field. Flow with one row of film cooling holes inclined 35◦ to the surface, with lateral injection (Φ = 90◦), is documented. The freestream turbulence intensity level is 12%, and coolant-to-mainstream velocity ratios are 0.5 and 1.0 (the density ratio is unity). General flow field characteristics are discussed and compared. Additional comparisons are made with similar measurements in a flow in which the injection is streamwise (Φ = 0◦).
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