An Improved Method for Accurate Prediction of Mass Flows Through Combustor Liner Holes

A theory is devised for predicting the coefficients of discharge for some types of combustor liner holes and for calculating the local quantity of airflow into the liner. The resulting equations are tested against reliable empirical data and they show an agreement of better than 99 percent. The new correlation is particularly amenable to the preliminary design and development of combustors and could usefully be incorporated into numerical modeling techniques. The theory is also used to devise a simple but very accurate method of correlating experimental data that has advantages over many of the methods in current use.