Lagrangian Tracer Setup¶

The formulas used for Lagrangian tracking can be found in Lagrangian Tracking Module

1) compile the code with -DTRACKING in Makefile
2) in input.txt specify
TRACER_FILE = tracers.txt
‘tracers.txt’ (you can use other names) is the file contains the initial positions of particles
3) in tracers.txt, specify:
NOTE: The particle position $$(x,y)$$ is specified at the central point of a cell, the same as other model variables such as :math: u,v,eta etc. The orgin (0,0) is at the central point of the bottom-left (south-west) corner cell.