ESS229
Prof. Jin-Yi Yu
Eulerian and Lagrangian Views
•Eulerian view of
the flow field is a way of looking at
fluid motion that focuses on
specific locations in the space through which the fluid flows.
•Lagrangian view 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.
In order to
apply conservation laws in the Eulerian frame, it is necessary to derive the
relationship between the rate of change
of a field variable following
the motion and its rate of
change at a fixed
location.
total derivative
local derivative
