HEC-22 Energy (Third Edition) - Benching
One component of Total Additional Structure Losses (
) is the energy loss due to benching.
See also: HEC-22 (Third Edition) Additional Structure Losses.
Similar to the consideration for benching within the Second Edition method, the structure's benching classification equates to a coefficient used to derive the component loss. However, the benching coefficient in Third Edition protocol is a factor applied to relative Entrance Loss instead of a minor loss coefficient applied to the velocity head.
= HEC-22 (Third Edition) Benching Coefficient.
= Relative Entrance Loss (See also: HEC-22 Third Edition - Entrance Loss.
The Third Edition of HEC-22 Manual categorizes five distinct for benching configurations.
Within the calculation option a Bentley user may customize the value of the (
) coefficient which maps to each benching configuration. The default (
) values are those recommended by Table 7-6 within the HEC-22 manual. For further flexibility, separate (
) values may be provided by the user for submerged and unsubmerged conditions. (See also: Calculation Options.)
) coefficient which maps to each benching configuration. The default () values are those recommended by Table 7-6 within the HEC-22 manual. For further flexibility, separate () values may be provided by the user for submerged and unsubmerged conditions. (See also: Calculation Options.)
