Page 2: Research news on Waves and free surface flows

Waves and free surface flows is a research area in fluid mechanics focused on flows with a deformable interface between a liquid and a gas, typically water and air, where surface tension and gravity govern interface dynamics. It encompasses the generation, propagation, interaction, and breaking of surface and internal waves, including linear and nonlinear wave theory, dispersive and solitary waves, and turbulence–wave coupling. Research combines theoretical modeling (e.g., Navier–Stokes equations with free-surface boundary conditions), laboratory experiments, and numerical methods such as volume-of-fluid and level-set approaches, with applications in coastal and ocean engineering, naval hydrodynamics, and environmental fluid dynamics.

New theory describes how waves carry information from surroundings

Waves pick up information from their environment through which they propagate. A theory of information carried by waves has now been developed at TU Wien—with astonishing results that can be utilized for technical applications.

When dissipative solitons vanish, breathing dynamics occur: Study

Solitons are quasiparticles that propagate along a non-dissipative wave. Put another way, they are waveforms that hold their shape as they move—like a single wave moving across the surface of a pond. They can also show particle-like ...

Supercomputers shine new light on ocean turbulence

As an ocean wave laps up against a beach, it contains innumerable swirls and eddies. The seawater forms complex patterns at each level, from the waves that surfers catch to ripples too small and fast for the human eye to ...

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