TY - JFULL AU - E. Movahednejad and F. Ommi PY - 2011/12/ TI - Development of Maximum Entropy Method for Prediction of Droplet-size Distribution in Primary Breakup Region of Spray T2 - International Journal of Chemical and Molecular Engineering SP - 1025 EP - 1032 VL - 5 SN - 1307-6892 UR - https://publications.waset.org/pdf/8729 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 59, 2011 N2 - Droplet size distributions in the cold spray of a fuel are important in observed combustion behavior. Specification of droplet size and velocity distributions in the immediate downstream of injectors is also essential as boundary conditions for advanced computational fluid dynamics (CFD) and two-phase spray transport calculations. This paper describes the development of a new model to be incorporated into maximum entropy principle (MEP) formalism for prediction of droplet size distribution in droplet formation region. The MEP approach can predict the most likely droplet size and velocity distributions under a set of constraints expressing the available information related to the distribution. In this article, by considering the mechanisms of turbulence generation inside the nozzle and wave growth on jet surface, it is attempted to provide a logical framework coupling the flow inside the nozzle to the resulting atomization process. The purpose of this paper is to describe the formulation of this new model and to incorporate it into the maximum entropy principle (MEP) by coupling sub-models together using source terms of momentum and energy. Comparison between the model prediction and experimental data for a gas turbine swirling nozzle and an annular spray indicate good agreement between model and experiment. ER -