Investigation of kinematics of a free unsubmerged jet

Abstract

In the development of scientific bases of hydromechanization of mining works the theory of motion of a free unsubmerged jet plays a great role. There is quite an extensive literature on the structure of the jet leaving the nozzle, instability developing in it, jet decay, influence of conditions preceding its exit, resistance of the surrounding (much less dense) medium and dynamic properties of the jet. Nevertheless, even in the experimental field, the existing data cannot be recognized as exhaustive for the creation of a hydraulic theory of the jet.