Large Eddy Simulation of Film Cooling: A Review

Film cooling has dramatically contributed to the performance improvement of gas turbines, as it is a very effective technique for turbines. Large eddy simulation (LES) began be used in study film 20 years ago, and meaningful results have been found, but not yet intensively reviewed. In this review paper, we analyze introduce about 70 papers published on LES over past years. Numerical instability must overcome, realistic inflow generated perform cooling. This summarizes how groups that performed solved these problems. film-cooling research, main topics are improving by preventing lift-off injectant effect flow conditions addition, also conducted extensively above two topics, focuses them. Finally, turbulence statistics obtained from introduced, future challenges predicted.