Changes between Version 86 and Version 87 of doc/app/particle_parameters

Timestamp:

Sep 13, 2010 3:14:20 PM (14 years ago)

Author:

suehring

Comment:

--

doc/app/particle_parameters

@@ -229 +229 @@
 }}}
 {{{#!td style="vertical-align:top"
-100
+1000
 }}}
 {{{#!td
@@ -236 +236 @@
 For runs on several processors, maximum_number_of_particles defines the maximum number on each PE. This number must be larger than the maximum number of particles initially released in a subdomain.
 }}}
-
+|----------------
+{{{#!td style="vertical-align:top"
+[=#maximum_number_of_tailpoints '''maximum_number\\_of_tailpoints''']
+}}}
+{{{#!td style="vertical-align:top"
+I
+}}}
+{{{#!td style="vertical-align:top"
+100
+}}}
+{{{#!td 
+Maximum number of tailpoints that a particle tail can have. \\
+'''maximum_number_of_tailpoints''' sets the number of descrete points the tail consists of. A new point is added to the particle tails after each time step. If the maximum number of tail points is reached after the corresponding number of timesteps, the oldest respective tail points is deleted within the following timestep. \\\\
+All particle tails have the same number of points. The maximum length of these tails is determined by the value of maximum_number_of_tailpoints and by the minimum distance between each of the adjoining tailpoints,  which can be set by [#minimum_tailpoint_distance minimum_tailpoint_distance]. Additionally, it can be determined that the temporal displacement between the current position of the particle and the oldest point of the tail may become not larger than a value to be assigned by [#maximum_tailpoint_age maximum_tailpoint_age].
+}}}
+|----------------
+{{{#!td style="vertical-align:top"
+[=#maximum_tailpoint_age '''maximum_tailpoint\\_age''']
+}}}
+{{{#!td style="vertical-align:top"
+R
+}}}
+{{{#!td style="vertical-align:top"
+100000.0
+}}}
+{{{#!td 
+Maximum age that the end point of a particle tail is allowed to have (in s). \\
+If the temporal displacement between the oldest point of a particle tail and the current position of the particle becomes larger than the value given by '''maximum_tailpoint_age''', this oldest point (which defines the end of the tail) is removed. If this time is so small that the number of points defining the particle tail do not exceed the value given by [#maximum_number_of_tailpoints maximum_number_of_tailpoints], then the length the particle tails is a measure for the distance the particle travelled along during the time interval defined via '''maximum_tailpoint_age''', i.e. for the particle velocity. Fast particles will have long tails, slow particles shorter ones (note: this will not neccessarily hold if [#minimum_tailpoint_distance minimum_tailpoint_distance] = ''0.0'').
+}}}