—We consider in this work a numerical three-dimensional study of the interaction of two row of discrete jets in a wall with an incompressible flow for an injection rate M=0.5. This simulation is applied to the stator blade of the CFM56-7B engine and is performed using the computational fluid dynamics (CFD) simulation tool, with CFX5.7.1 software. This code use the finite volume method to solve the equations of Navier-Stokes and offer several turbulences models. In this study, the shear stress turbulence model (SST) is used.The velocity and temperature distributions are presented and discussed. The results obtained show some information. The two rows of holes on the leading edge is not sufficient to cool the blade because the injection faces the hot flow (crossflow), and is found on the stagnation line of the leading edge. The cooling is only localized at the leading edge for the first row and extends over a certain distance from the intrados to the second row. More, the results show the existence of two tourbillions contrarotatifs. These vortices transport the hot gas in the jet and thus degrade the protective wall.
—Film cooling, heat transfer, numerical simulation, turbulent flows.
D. Cherrared is with the Mechanical Engineering School, USTHB University, Bab Ezzouar Algiers Algeria, Algeria (e-mail: email@example.com.)
Cite: D. Cherrared, "Study of Film Cooling Appliedon a Fixed Blade of a Sector HPT of the CFM56-7B Engine," International Journal of Engineering and Technology vol. 8, no. 2, pp. 83-87, 2016.