NOTATION A

The present study aims at providing a theoretical procedure for the determination of droplets mean diameter and probability distribution. It is developed for the particular case of ultrasonic atomisation. First the mean droplet diameter is predicted based on the stability analysis of the liquid film. Then, the maximum entropy formalism (MEF) is used to find the most likely droplets diameter probability distribution with respect to the predicted mean diameter and with the type of atomisation. Finally, theoretical results are compared with experimental measurements. MEF provides a logical method for choosing a distribution in agreement with the knowledge we have about atomisation phenomena. As it is not relying on fitting to experimental data it may be used to find diameter probability distributions when and adequate theoretical approach provides a mean droplet diameter