Abstract
The entrainment of air into a conical spray centred on the axis of a short tube is investigated. Dimensional analysis successfully correlates the experimental results of both the present and previous investigations for the case of an unrestricted system. The case where the spray operates against a back pressure, such as might be represented by a length of ducting connected to the outlet, is also considered. Morton's analysis of entrainment into the wake of an isolated body is adapted and some agreement is obtained with experimental results for small flight distance of the drops.
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