Definition of downstream opening
Figure 59 presents the dialog window defining the downstream end of the penstock. The user can define either a circular or rectangular opening. The image in the top right-hand corner describes the data required for defining the opening. The Validate button allows the user to check the input data.
It should be noted that if the user defines a rectangular section downstream, CADAM3D will force the user to define only rectangular intermediate sections for the hydraulic passages and penstock.