TY - JOUR TI - Numerical study of heat transfer enhancement due to the use of fractal-shaped design for impingement cooling AU - Cai Lin AU - Liu Zhuo AU - Gao Jianshu AU - Liu Xiao JN - Thermal Science PY - 2017 VL - 21 IS - 11 SP - 33 EP - 38 PT - Article AB - This paper describes a numerical analysis of a heat transfer enhancement technique that introduces fractal-shaped design for impingement cooling. Based on the gas turbine combustion chamber cooling, a fractal-shaped nozzle is designed for the constant flow area in a single impingement cooling model. The incompressible Reynolds-averaged Navier-Stokes equations are applied to the system using CFD software. The numerical results are compared with the experiment results for array impingement cooling.