Tracer

compute particle traces and streamlines

Parameters

name	description	type
verbose	verbose output	Int
taskType	task type (Streamlines, MovingPoints, Pathlines, Streaklines)	Int
startpoint1	1st initial point	Vector
startpoint2	2nd initial point	Vector
direction	direction for plane	Vector
no_startp	number of startpoints	Int
max_no_startp	maximum number of startpoints	Int
steps_max	maximum number of integrations per particle	Int
trace_len	maximum trace distance	Float
trace_time	maximum trace time	Float
tdirection	direction in which to trace (Both, Forward, Backward)	Int
startStyle	initial particle position configuration (Line, Plane, Cylinder)	Int
integration	integration method (Euler, RK32, ConstantVelocity)	Int
min_speed	minimum particle speed	Float
dt_step	duration of a timestep (for moving points or when data does not specify realtime	Float
h_init	fixed step size for euler integration	Float
h_min	minimum step size for rk32 integration	Float
h_max	maximum step size for rk32 integration	Float
err_tol_abs	absolute error tolerance for rk32 integration	Float
err_tol_rel	relative error tolerance for rk32 integration	Float
cell_relative	whether step length control should take into account cell size	Int
velocity_relative	whether step length control should take into account velocity	Int
use_celltree	use celltree for accelerated cell location	Int
num_active	number of particles to trace simultaneously on each node (0: no. of cores)	Int
particle_placement	where a particle’s data shall be collected (InitialRank, RankById, RankByTimestep, Rank0)	Int
cell_index_modulus	modulus for cell number output	Int
simplification_error	tolerable relative error for result simplification	Float