The effects of high free-stream turbulence on heat transfer in turbulent boundary layer

A series of heat transfer measurements utilizing a variety of flows, each characterized by a high level of turbulence, is evaluated. This research is conducted to aid in predicting the heat transfer of first stage turbine blades and vanes. Instead of establishing a particular high turbulence flow field and measuring its effect on heat transfer, a set of flow fields with very aggressive heat transfer characteristics was determined in order to learn which aspects of these flows were responsible for the high heat transfer. Results of these tests were utilized to identify the most aggressive heat transfer environments, and then the turbulence properties of those flows were studied.