Swirling main flow effects on film cooling: Time resolved adiabatic effectiveness measurements in a gas turbine combustor model

•The effectiveness of effusion system for liner is influenced by the swirling flows generated by the swirler injectors•A non-reactive single-sector linear combustor has been designed to investigate the impact of Swirl number.•Film effectiveness was acquired using fast response pressure sensitive paint (FPSP) technique at 1kHz•The time-resolved analysis allowed to track the impact of swirling flow on the effusion cooling system