Blank, G, S Channel_Type:
Additional form losses (factor of dynamic head) due to bends, bridge piers, etc. Preferable to use instead of increasing Manning’s n. For S channels, this only applies when not in upstream controlled friction mode.
B Channel_Type:
Since Build 2005-05-AN, adds the value specified to the loss coefficients in the BG table. Note, the component this value adds to the loss coefficient is not subject to adjustment when using Structure Losses == ADJUST.
If no BG table is specified, and the value is greater than zero, TUFLOW automatically generates a BG table of constant loss coefficient up until the bridge deck (top of cross-section) where a value of 1.56 is used.
Prior to Build 2005-05-AN, not used and should be set to zero.
Dostları ilə paylaş: |
