Formation from Vertically Oriented Orifices

Drop Formation from Vertically Oriented Orifices 

In the absence of surface tension influences, the drop formation at vertical orifices is expressed by the equation given for bubble formation. The force due to kinetic energy of the liquid is neglected as its component is zero in the vertical direction. The drop ascends right from the beginning according to the equation of motion and detaches when it has covered a distance equal to the diameter of the nozzle. 

Equation (151) reduces to the inviscid case when pi is put equal to zero. 

This equation, when solved between x = 0 to D for t = 0 to tc, yields 

No data are available for other orientations, but equations similar to those for bubble formation, taking the appropriate component of the force due to kinetic energy, will be applicable. 

---

XIV. Drop Formation from Vertically Oriented Orifices. 346... 

---