Effects of Rib Configuration on Cooling of GasTurbine Blades
Ahmed M. Bagabir

Ahmed M. Bagabir, Faculty of Engineering, Jazan University P. O. Box 706, Jazan, Saudi Arabia.
Manuscript received on 15 December 2015 | Revised Manuscript received on 25 December 2015 | Manuscript Published on 30 December 2015 | PP: 1-7 | Volume-5 Issue-2, December 2015 | Retrieval Number: B4321125215/15©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: This study aims to investigate the effects of rib configuration on cooling gas turbine blades. Three-dimensional ribbed square-channel of gas turbine blades are simulated with the Reynolds averaged Navier-Stokes equations. Air flow in periodical transverse and 45o inclined rib arrays, mounted in inline and staggered arrangements on the lower and upper walls of the channel. The governing equations are discretized by the second order upwind differencing scheme, decoupling with the SIMPLE algorithm. The turbulence effect is modeled with the RNG k-ε model. The present numerical results show excellent agreement with published experimental data. The presented results are streamtraces, velocities, local and area-averaged Nusselt numbers over ribbed walls for the Reynolds numbers ranging from 2×104 to 4×104 .
Keywords: Heat Transfer, Numerical Simulation, Ribbed Channel, Turbine Blade

Scope of the Article: Heat Transfer