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-rw-r--r--doc/fullswof-utils.texi46
1 files changed, 36 insertions, 10 deletions
diff --git a/doc/fullswof-utils.texi b/doc/fullswof-utils.texi
index eee21e9..e51292b 100644
--- a/doc/fullswof-utils.texi
+++ b/doc/fullswof-utils.texi
@@ -274,34 +274,60 @@ The keys are defined as follows:
@table @asis
@item type
boundary type (1=imposed height, 2=wall, 3=Neumann, 4=periodic,
-5=imposed discharge)
+5=imposed discharge). For cases 1 and 5, the height and imposed
+discharge are both specified for each cell along the boundary. For
+sub-critical inflow the type value (1 or 5) determines which of the
+specified values are used. For super-critical inflow both values are
+used. For super-critical outflow neither value is used.
@item plotting
-enable plotting (True or False)
+enable plotting (True or False). The program can display plots of
+hydraulic radius, conveyance and discharge versus water level for each
+active panel. To cycle through the plots press the @samp{q} key.
@item printing
-enable printing (True or False)
+enable printing (True or False). The program can write output files
+containing data for the @emph{rating curve} for each active panel.
+Rating curves express the relation between water level and discharge.
@item slope
-local gradient
+local gradient. This is the value normal to the boundary, derived
+from survey data or from running the @command{slope.py} program.
@item target_flow
-imposed discharge (flow across boundary /@math{m@sup{3}/s})
+imposed discharge (/@math{m@sup{3}/s}). This is the total flow
+crossing the boundary.
@item markers
-panel marker co-ordinates (comma-separated list of distances /m)
+panel marker co-ordinates (/m). This is a comma-separated list of
+distances. The distances indicate the measurement from the left-hand
+edge of the domain to the internal marker points. Markers at the
+corner points are automatically generated to complete the list.
@item panel
-fill order (comma-separated list of panel indices)
+fill order. The fill order is a comma-separated list of panel
+indices. The list specifies the manner in which the wetted area
+changes as the flow increases.
@item ztol
-channel overtopping tolerance (/m)
+channel overtopping tolerance (/m). For the main channel, the
+overtopping tolerance sets the difference between the minimum ground
+elevation at the channel banks and the maximum water level. When the
+flow is sufficiently high for the water level to reach this level the
+next panel, specified by the fill order, is activated. This panel can
+then fill to the same maximum water level. The panels are filled in
+sequence until one panel is part-filled so that the total flow across
+the boundary matches the target flow.
@item n_co
-Manning's n coefficients (comma-separated list, ordered by panel index)
+Manning's @samp{n} coefficients. This is a comma-separated list,
+ordered by panel index. Each panel is allocated a coefficient
+representing the roughness value for that section of the boundary.
@item numH
-number of height intervals
+number of height intervals. The relation between water level and
+discharge is calculated at the specified number of points, for each
+active panel.
@end table
Comment lines are allowed in the boundary definition file. Lines that