Lagrangian Coordinates
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Lagrangian Coordinates
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1. A system of coordinates
by which fluid parcels are
identified for all time by assigning them coordinates which do
not vary with time. Examples of such coordinates are: (a) the
values of any properties of the fluid conserved in the motion;
or (b) more generally, the positions in space of the parcels
at some arbitrarily selected moment. Subsequent positions in
space of the parcels at some arbitrarily selected moment. Subsequent
positions in space of the parcels are then the dependent variables,
functions of time and of the Lagrangian coordinates. Also called
material coordinates. Compare Eulerian
coordinates. See Lagrangian
equations.
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2. Same as generalized coordinates. [[/a>|/a>
]]
References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use
