The nonlinear instability of a compound jet consisting of a liquid core and immiscible coaxial liquid layer is studied. The equations of motion for both liquids (phases) are used in one-dimensional (1-D) approximation similar to that known for one-layer jet.A numerical method is proposed for calculation the radiuses of both interfaces and axial velocities of the core and outer layer. The method is tested for determining the typical forms of compound jet disintegration.
['S. Radev', 'M. Kaschiev', 'M. Koleva', 'Lounes Tadrist', 'F. Onofri']
Numerical analysis of the nonlinear instability of one-dimensional compound capillary jet