Automotive cooling airflow correlations

The design of more efficient automotive cooling systems requires better understanding of the losses in fluid energy through the front end cooling openings. A wind tunnel study with simplified models has been conducted to investigate the factors effecting the cooling opening energy losses. The data from this study have been successfully correlated using newly defined dimensionless parameters. The influence of the studied geometrical factors is clearly identifiable with the data presented in dimensionless form. An algorithm has been devised which can accurately predict the behavior of a combination of cooling openings given the behavior of each of the openings operating individually.