In the light of experimental evidence a previously published model to predict the charge and mass redistribution when charged dielectric drops break up has been updated. In particular we have taken the dielectric nature of the liquid, the existence of an external electric field and used photographic evidence of drop break up as a basis for geometrical assumptions that are physically realistic. We have assessed the sensitivity of the charge redistribution assumption and the improved model compares well with the recent accurate experimental evidence. The results apply to ratio of quantities of mass and charge, making the model extremely simple and economical to apply to multi-dimensional charged spray computer codes in order to predict evaporating charged sprays accurately
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