Abstract
For the Large Eddy Simulation (LES) of film cooling flows with multiple coolant jets, a film-hole model based on a RFG (Random Flow Generation) technique was proposed to simulate turbulent fluctuating flows at the exit plane of film cooling hole as a boundary model. The proposed film-hole model for LES was validated by the comparison of predicted center-line film effectiveness with a known experimental result. In addition, the present LES was confirmed to predict correctly the effect of a swirling motion in a coolant jet on the film cooling effectiveness, by comparing it with experimental results. The spatial structure of the film cooling effectiveness at a cross section was also predicted well.
