Abstract
A mathematical model based on the BurkeSchumann flame theory is developed to predict the flame length of an elliptic burner analytically. The model utilizes the Roper’s theoretical method for circular burners and extends the analysis for elliptic burners. The model predictions are validated through experimental measurements at buoyant and nonbuoyant conditions. An Elliptic tube burner of 2:1 aspect ratio are studied at normal and microgravity environment. In addition, the flame width was calculated based on Spalding analyses. The predicted flame lengths compare fairly well with experimental measurements. The differences between theoretical calculation and experimental measurements are within 10%. However, the flame width prediction through theoretical model does not quantitatively agree well with experimental measurements. The average difference between the experimental measurement and the theoretical prediction of flame width is around 19.5%.
Published Version
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