Lagrangian analysis is the use of
Lagrangian coordinates
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In classical field theories, the Lagrangian specification of the flow field is a way of looking at fluid motion where the observer follows an individual fluid parcel as it moves through space and time. Plotting the position of an indi ...
to analyze various problems in continuum mechanics.
Lagrangian analysis may be used to analyze
currents and
flow
Flow may refer to:
Science and technology
* Fluid flow, the motion of a gas or liquid
* Flow (geomorphology), a type of mass wasting or slope movement in geomorphology
* Flow (mathematics), a group action of the real numbers on a set
* Flow (psych ...
s of various materials by analyzing data collected from gauges/sensors embedded in the material which freely move with the motion of the material. A common application is study of
ocean currents in
oceanography
Oceanography (), also known as oceanology and ocean science, is the scientific study of the oceans. It is an Earth science, which covers a wide range of topics, including ecosystem dynamics; ocean currents, waves, and geophysical fluid dynamic ...
, where the movable gauges in question called
Lagrangian drifters.
Recently, with the development of high speed cameras and particle-tracking algorithms, there have also been applications to measuring turbulence.
[Small-scale anisotropy in Lagrangian turbulence by Nicholas T Ouellette et al 2006 New J. Phys. 8 102 ]
References
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Fluid dynamics