Generalized solution of the tomotika stability analysis for a cylindrical jet

The stability of cylindrical jets in immiscible liquid systems is analyzed with the low velocity theory of Tomotika. For the first time the several limiting solutions in the literature are obtained from a general equation, so approximate restrictions on their applicability can be presented. These restrictions show that for many systems none of the limiting solutions is valid. Correlations applicable to all Newtonian liquid‐liquid systems are presented for predicting the growth rate and wavelength of the most unstable disturbance.