Numerical simulation of universal morphogenesis of fluid interface deformations driven by radiation pressure

Area of Science:

• Physics
• Fluid Dynamics
• Acoustics and Electromagnetics

Background:

• Fluid interfaces can be deformed by external forces, including radiation pressure.
• Understanding the morphogenesis of these deformations is crucial in various scientific and engineering fields.

Purpose of the Study:

• To numerically simulate fluid interface deformations induced by acoustic or optical radiation pressure.
• To investigate the universality of interface deformation morphogenesis across different wave types.
• To compare simulation results with experimental observations.

Main Methods:

• Solving the scalar wave propagation equation and two-phase flow equations simultaneously.
• Utilizing the boundary element method for numerical simulations.
• Performing dimensional analysis to identify key dimensionless parameters.

Main Results:

• Interface deformation morphogenesis is universal, governed by the same dimensionless parameters in acoustics and electromagnetics.
• Numerical simulations accurately capture phenomena like large deformations, slenderness transitions, and hysteresis.
• Qualitative agreement is achieved when considering the interplay between wave propagation and deformations.

Conclusions:

• Radiation pressure plays a leading role in the morphogenesis of fluid interface deformations.
• The interplay between wave propagation and deformation is critical for accurate modeling.
• The findings provide a unified understanding of wave-induced interface phenomena.