The influence of film-hole position on internal and external heat transfer was investigated using Computational Fluid Dynamics (CFD). A simplified geometry an integrated configuration a ribbed channel, film hole mainstream passage is modeled to represent turbine cooling scheme. proposed configurations with nine different positions holes are parameterized conduct series CFD calculations at targe...

Polymer concrete, a composite material in which the binding material is some type of polymer, is being used more widely in the construction industry. Polymer concretes can also contain steel reinforcing rebars; therefore, the rate of adhesion between polymer concrete and reinforcing steel must be determined. Our study investigated the extent and behaviour of adhesion in the case of reinforcing ...

The object of this study is to characterize the aero-thermal performance of a rectangular turbine blade cooling channel for gas turbines equipped with turbulence promoters, square section ribs, inclined at 45 degrees with respect to the main flow direction. With this aim, a P.I.V investigation of the flow field within an inter-rib space inside four cooling channel models has been done. The pres...

Computational study was carried out to determine average heat transfer coefficients and friction factors for turbulent flow through rectangular ducts with ribs. A commercial finite volume package ANSYS FLUENT 12.1 is used to analyze and visualize the nature of the flow across the ribbed duct The fluid in the duct was air, and the average heat transfer coefficients were determined by measuring t...

A preliminary study of structural concepts for noncircular fuselage configurations is presented. For an unconventional flying-wing type aircraft, in which the fuselage is inside the wing, multiple fuselage bays with non-circular sections need to be considered. In a conventional circular fuselage section, internal pressure is carried efficiently by a thin skin via hoop tension. If the section is...

In this study an orthotropic slab finite element is developed to model orthotropic slabs in fire, using a layered 9-noded iso-parametric slab element and a 3-noded beam element. The element is assembled from a solid slab element which represents the continuous upper portion of the profile, and a special beam element which represents the ribbed lower portion. An equivalent width for the cross-se...

Abstract In this paper, a Computational Fluid-Dynamics (CFD) analysis on heat transfer characteristic using Reynolds Averaged Navier-Stokes (RANS) equations rectangular channel with ribbed surfaces is presented. Several numerical simulations have been carried out convective of an air flow through 1:10 aspect ratio, 120 mm wide, 840 long, 90° ribs. Ribs square cross section 4 side and three diff...