 
 
 
 
 
 
 
  
The discontinuous slope is the upstream element of a pair of boundary elements simulating a change in slope. The corresponding downstream element is the discontinuous opening. Both are illustrated in Figure 109. The following constants have to be specified on the line beneath the *FLUID SECTION,TYPE=CHANNEL DISCONTINUOUS SLOPE card:
 
 (Figure 109; if
 (Figure 109; if  the slope is calculated from the
  coordinates of the end nodes belonging to the element)
 the slope is calculated from the
  coordinates of the end nodes belonging to the element)
 (Figure 109; if
 (Figure 109; if  the length is calculated from the
  coordinates of the end nodes belonging to the element)
 the length is calculated from the
  coordinates of the end nodes belonging to the element)
 
 for the White-Colebrook law or the Manning
  constant
 for the White-Colebrook law or the Manning
  constant  for the Manning law (in the latter case the user has to specify
  the parameter MANNING on the *FLUID SECTION card)
 for the Manning law (in the latter case the user has to specify
  the parameter MANNING on the *FLUID SECTION card)
The length  is typically small compared to the length of the adjacent
channel branches. Since storage for 9 items is provided and only 8 entries are
allowed per line, an extra blank line has to be provided for the ninth dummy
item.
 is typically small compared to the length of the adjacent
channel branches. Since storage for 9 items is provided and only 8 entries are
allowed per line, an extra blank line has to be provided for the ninth dummy
item. 
Notice that a discontinuous slope element generally has upstream channel elements attached to it. Therefore, it is always mandatory to specify an upstream reference element.
Example files: channel6.
 
 
 
 
 
 
