 
 
 
 
 
 
 
  
The sluice opening element is always adjacent to a sluice gate element on its upstream side. Both are illustrated in Figure 105. The sluice opening element has the gate door located at its upstream end node. Since the water depth in the downstream end node of this element should represent the depth just downstream of the gate door, the length of this element should be chosen to be particularly small. The following constants have to be specified on the line beneath the *FLUID SECTION,TYPE=CHANNEL SLUICE OPENING card:
 
 (if
 (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)
 (if
 (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 meaning of  ,
,  ,
,  and
 and  can be derived from Figure
104.
 can be derived from Figure
104. 
Example files: channel1, chanson1.
 
 
 
 
 
 
