Numerical Analysis of Multi-Zone Effusion Cooling with Super-Long-Diamond Arrangement

Abstract

The current study employs a 3D numerical analysis on an adiabatic flat plate for full-inclusion film cooling. A super-long-diamond (SLD) arrangement with 5×5×5 holes configuration is used with 30° forward coolant injection at velocity ratios (0.5, 1.5 and, 2.5). The SLD arrangement with 5×5×5 holes configuration has been studied, and a comparison between long-diamond (LD) and SLD arrangement for multi-zone configuration has been made. The aim of the present study is to increase film cooling effectiveness with minimum coolant supply. Results show that the super-long-diamond arrangement with 5×5×5 holes configuration provides better cooling effectiveness than a long-diamond arrangement with 5×5×5 and 6×6×6 holes configuration, which also reduces the number of effusion holes requirement.