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http://dx.doi.org/10.6112/kscfe.2012.17.2.001

SHAPE OPTIMIZATION OF THE AIRFOIL-GUIDE VANES IN THE TURNING REGION FOR A ROTATING TWO-PASS CHANNEL  

Moon, M.A. (Dept. of Mechanical Engineering, Inha Univ.)
Kim, K.Y. (Dept. of Mechanical Engineering, Inha Univ.)
Publication Information
Journal of computational fluids engineering / v.17, no.2, 2012 , pp. 1-10 More about this Journal
Abstract
This paper presents the numerical simulation results of heat transfer and friction loss for a rotating two-pass duct with the airfoil-guide vanes in the turning region. The Kriging model is used as an optimization technique with Reynolds-averaged Navier-Stokes analysis of flow field and heat transfer with shear stress transport turbulent model. To improve the heat transfer performance, angle and location of the airfoil-guide vanes have been selected as design variables. The optimization problem has been defined as a minimization of the objective function, which is defined as a linear combination of heat transfer related term and friction loss related term with a weight factor. The airfoil-guide vanes in the turning region keep the high level of heat transfer while the friction loss has a low value. By comparing the presence or absence of airfoil-guide vanes, it is shown that the airfoil-guide vanes exhibited the best heat transfer performance to improve the blade cooling except the first passage.
Keywords
Optimization; Blade Tip Cooling Technique; The Coriolis force;
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