Shear stripping atomization

Atomization of liquid drops has practical engineering applications such as in combustion, sprays, and others. We experimentally study the shear stripping mode of atomization where a liquid drop interacts with a normal shock wave and deforms under shock-induced flow. The initial deformation and circumferential surface waves on the drop are governed by shear instability (Kelvin-Helmholtz). The wave amplification redistributes liquid and the drop evolves into a bowl. Flow acceleration induces modulations, forming an azimuthal ring with its own rim. Two sub-modes emerge: Ligament mode with sheet shearing at lower velocities, and Cellular mode with localized cells at relatively higher velocities.