Download or read book Full coverage Film Cooling Heat Transfer Study written by and published by . This book was released on 1976 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Full coverage Film Cooling Heat Transfer Study Summary of Data for Normal hole Injection and 30 Deg Slant hole Injection written by and published by . This book was released on 1976 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Full Coverage Film Cooling Heat Transfer Studies a Summary of the Data for Normal Hole Injection and 30 Degrees Slant Hole Injection written by Stanford University. Thermosciences Division. Thermosciences Division and published by . This book was released on 1975 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Full coverage Film Cooling Heat Transfer Study written by and published by . This book was released on 1976 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Full coverage Film Cooling Heat Transfer Studies a Summary of the Data for Normal hole Injection and 30 Degree Stant hole Injection written by M. E. Crawford and published by . This book was released on 1975 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results are presented from a study of heat transfer to a full-coverage, film-cooled turbulent boundary layer over a flat surface. The surface used in the investigation consists of a discrete hole test section, containing eleven.

Download or read book Surface Measurements and Predictions of Full coverage Film Cooling written by Greg Natsui and published by . This book was released on 2012 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: Full-coverage film cooling is investigated both experimentally and numerically. First, surface measurements local of adiabatic film cooling eeffectiveness and heat transfer augmentation for four different arrays are described. Reported next is a comparison between two very common turbulence models, Realizable k-[epsilon] and SST k-[omega], and their ability to predict local film cooling effectiveness throughout a full-coverage array. The objective of the experimental study is the quantification of local heat transfer augmentation and adiabatic film cooling effectiveness for four surfaces cooled by large, both in hole count and in non-dimensional spacing, arrays of film cooling holes. The four arrays are of two different hole-to-hole spacings (P/D = X/D = 14.5; 19.8) and two different hole inclination angles ([alpha] = 30°; 45°), with cylindrical holes compounded relative to the flow ([beta] = 45°) and arranged in a staggered configuration. Arrays of up to 30 rows are tested so that the superposition effect of the coolant film can be studied. In addition, shortened arrays of up to 20 rows of coolant holes are also tested so that the decay of the coolant film following injection can be studied. Levels of laterally averaged effectiveness reach values as high as [eta with line above]= 0.5, and are not yet at the asymptotic limit even after 20-30 rows of injection for all cases studied. Levels of heat transfer augmentation asymptotically approach values of h=h0 [almost equal to] 1.35 rather quickly, only after 10 rows. It is conjectured that the heat transfer augmentation levels off very quickly due to the boundary layer reaching an equilibrium in which the perturbation from additional film rows has reached a balance with the damping effect resulting from viscosity. The levels of laterally averaged adiabatic film cooling effectiveness far exceeding [eta with line above]= 0.5 are much higher than expected. The heat transfer augmentation levels off quickly as opposed to the film effectiveness which continues to rise (although asymptotically) at large row numbers. This ensures that an increased row count represents coolant well spent. The numerical predictions are carried out in order to test the ability of the two most common turbulence models to properly predict full-coverage film cooling. The two models chosen, Realizable k-[epsilon] (RKE) and Shear Stress Transport k-[omega] (SSTKW), are both two-equation models coupled with Reynolds Averaged governing equations which make several gross physical assumptions and require several empirical values. Hence, the models are not expected to provide perfect results. However, very good average values are seen tobe obtained through these simple models. Using RKE in order to model full-coverage filmcooling will yield results with 30% less error than selecting SSTKW.

Download or read book Full coverage Film Cooling on Flat Isothermal Surfaces written by Michael E. Crawford and published by . This book was released on 1979 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental and analytical study of the heat transfer and fluid mechanics characteristics of full-coverage film cooling has been under way since 1971. This report summarizes the results for flat, isothermal plates for three.

Download or read book A Full Coverage Film Cooling Study written by Justin Hodges and published by . This book was released on 2015 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is an experimental and numerical full-coverage film cooling study. The objective of this work is the quantification of local heat transfer augmentation and adiabatic film cooling effectiveness for two full-coverage film cooling geometries. Experimental data was acquired with a scientific grade CCD camera, where images are taken over the heat transfer surface, which is painted with a temperature sensitive paint. The CFD component of this study served to evaluate how well the v2-f turbulence model predicted film cooling effectiveness throughout the array, as compared with experimental data. The two staggered arrays tested are different from one another through a compound angle shift after 12 rows of holes. The compound angle shifts from [beta]=-45° to [beta]=+45° at row 13. Each geometry had 22 rows of cylindrical film cooling holes with identical axial and lateral spacing (X/D=P/D=23). Levels of laterally averaged film cooling effectiveness for the superior geometry approach 0.20, where the compound angle shift causes a decrease in film cooling effectiveness. Levels of heat transfer augmentation maintain values of nearly h/h0=1.2. There is no effect of compound angle shift on heat transfer augmentation observed. The CFD results are used to investigate the detrimental effect of the compound angle shift, while the SST k-[omega] turbulence model shows to provide the best agreement with experimental results.

Download or read book Heat Transfer to a Full coverage Film cooled Surface with Compound angle 30 Deg and 45 Deg Hole Injection written by H. K. Kim and published by . This book was released on 1979 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental study of heat transfer was conducted on a turbulent boundary layer with full-coverage film cooling through an array of holes inclined at 30 degrees to the surface and 45 degrees to the flow direction.

Download or read book Heat Transfer to a Full Coverage Film Cooled Surface with Thirty Degree Slant Hole Injection written by Stanford University. Thermosciences Division. Thermosciences Division and published by . This book was released on 1976 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An investigation of the heat transfer for full coverage film cooling of a flat plate with normal holes written by Grady Blair Kelly and published by . This book was released on 2001 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Heat Transfer to a Full coverage Fillm cooled Surface with 30 deg Slant hole Injection written by M. E. Crawford and published by . This book was released on 1976 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental and analytical study of heat transfer to a turbulent boundary layer over a full-coverage film-cooled surface has been carried out. A flat test surface consisting of a film cooling section and a recovery section was.

Download or read book The Turbulent Boundary Layer on a Full coverage Film cooled Surface written by H. Choe and published by . This book was released on 1976 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heat transfer behavior was studied in a turbulent boundary layer with full-coverage film cooling through an array of discrete holes, with injection normal to the wall surface.

Download or read book Full coverage Film Cooling on Flat Isothermal Surfaces Data and Predictions written by and published by . This book was released on 1980 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Film Cooling on a Convex Wall written by Kokichi Furuhama and published by . This book was released on 1983 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Turbulent Boundary Layer on a Full coverage Film cooled Surface written by H. Choe and published by . This book was released on 1976 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Simulation Study of Three Instrument Displays to Assist in Airplane Thrust Management written by Milton D. McLaughlin and published by . This book was released on 1970 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three displays were evaluated on a piloted simulator, each of which provided information which could be used in thrust management. The three displays were (1) rate of change of speed, (2) potential flight-path angle, and (3) potential rate of climb. Results are presented in the form of time histories, histograms, and pilot comments. The results include comparisons of flight-path and speed control and throttle activity with and without each display and pilot comments.