OPTIMIZING FILM COOLING PERFORMANCE IN GAS TURBINES: INVESTIGATING THE IMPACT OF TEMPERATURE AND BLOWING RATIOS ON C3X GUIDE VANE COOLING EFFICIENCY

Abstract

This study examines the optimization of film cooling performance in gas turbines, specifically the C3X guide vane. This research aims to determine the effect of temperature ratio (TR) and blowing ratio (BR%) on the cooling efficiency of the vane. The inquiry is divided into three stages: pressure distribution prediction and model validation, heat transfer coefficient (HTC) distribution validation under different operating conditions, and evaluation of local HTC using varied TR and BR%. The results show a percentage increase in the heat transfer coefficient, indicating improved film cooling effectiveness. This research uses computational fluid dynamics (CFD) as a forecasting technique and validates it with experimental data from prior studies. The optimization technique used in this study is innovative in that it combines numerical simulation with parameterized design to improve film cooling efficacy and safeguard gas turbine components from excessive temperatures. The findings help create more effective cooling solutions for gas turbine applications by emphasizing the significance of TR and BR% in maximizing film cooling performance. Keywords: C3X, Film Cooling, Temperature Ratio, Blowing Ratio Percentage DOI： https://doi.org/10.35741/issn.0258-2724.58.5.26