Risultati di ricerca
28 nov 2013 · Surface curvature is known to have significant effects on film cooling performance, with convex curvature inducing increased film effectiveness and concave curvature causing decreased film effectiveness. Generally, these curvature effects have been presumed to scale with 2r/d at the film cooling hole location, where r is the radius of curvature and d is coolant hole diameter. In this study ...
Editing: Joel Griffen. Runtime: 90 minutes. Country: United States. Language: English. Curvature is a 2017 American science fiction mystery thriller film directed by Diego Hallivis and starring Lyndsy Fonseca and Linda Hamilton.
1 nov 2017 · Nearly all tear film models assume the substrate (the cornea or contact lens) under the tear film to be flat. This approximation is based on the fact that the tear film’s thickness, which is of the order of a few microns, is very small compared to the average radius of curvature of the cornea surface, which is of the order of a centimeter [18].
The strength of curvature was controlled by varying the injection hole diameter. At low blowing rates, film cooling is more effective on the convex surface than on a flat or a concave surface. The cross-stream pressure gradient present in curved flows tends to push the jet into the convex wall.
The effects of variable main stream velocity on film cool- ing effectiveness were analyzed by some investigators [2-5]. Nicolas and LeMeour [6] studied the effect of streamline curvature on film cooling and observed that the effect of the curvature on film cooling depends upon the injection veloc- ity.
A broadband absorber composed of a TiAlC/SiO2 film stack prepared by atomic layer deposition was presented, which could be uniformly coated on magnesium alloys with large curvature, achieving an average absorption as high as 99.4% within the wavelength range from 400 to 1000 nm. An Al2O3/TiO2 interlayer was deposited on magnesium alloys prior to the deposition of ultrablack films, which ...
1 mag 2010 · When the film thickness is given, the thickness of the plastic zone in the film with a strain hardening of 15 GPa is relatively lower than that in the film with a strain hardening of 0 GPa. The magnitude of λ as a function of the corresponding temperature difference Δ T 2 with respect to different values of η is shown in Fig. 6 .
