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Lagrangian-Eulerian dynamics of breaking shallow water waves through tracer tracking of fluid elements
- Source :
- Physical Review E. 87
- Publication Year :
- 2013
- Publisher :
- American Physical Society (APS), 2013.
-
Abstract
- We experimentally investigate the Lagrangian-Eulerian dynamics of fluid motion and wave-form evolution for a breaking shallow water wave approaching a slope by tracking tracer motions. It is found that, before breaking, the surface element can climb over the crest and exhibits cyclic oscillation with small forward drift. The increasing asymmetric tangential compression (accumulation) and rarefaction (depletion) in the crest front and the crest are the keys for the crest front steepening with the increasing particle cyclic excursion and forward Stoke drift. Eventually, the surface layer cannot climb over the crest with the vertical front. It curls up and forms an overhanging plunging jet leading the crest, while the lower flow still can reach the crest rear. This process leads to wave breaking with the rapid drop of crest height and the transition from slow divergence to rapid divergence of the adjacent fluid trajectories.
- Subjects :
- animal structures
Drop (liquid)
digestive, oral, and skin physiology
Excursion
Water
Breaking wave
Mechanics
Physics::Geophysics
Solutions
Physics::Fluid Dynamics
Waves and shallow water
Nonlinear Sciences::Exactly Solvable and Integrable Systems
Models, Chemical
TRACER
embryonic structures
Physics::Space Physics
Water Movements
Climb
Computer Simulation
Crest
Surface layer
Rheology
Nonlinear Sciences::Pattern Formation and Solitons
Geology
Subjects
Details
- ISSN :
- 15502376 and 15393755
- Volume :
- 87
- Database :
- OpenAIRE
- Journal :
- Physical Review E
- Accession number :
- edsair.doi.dedup.....a576693fc1fac691f640e334d71c6506