user's manual for corhyd: an internal diffuser hydraulics model - IfH

Fig. 16 shows the GUI with an example input. The graphical user interface consists of 5 tabs:
Ambient Data (i.e. parameters describing the ambient water body), Effluent Data,
Diffuser/Feeder Pipe Configurations (i.e. location, roughness, diameter, etc. of the main pipe;
here, 6 different sections are chosen), Port/Riser Configurations (i.e. location, roughness,
diameters etc. of the different risers and ports; here, 5 different port-riser groups are chosen),
and Output (i.e. Text File, energy line, discharges, and the setup of the outfall). Since none of
the port-riser groups is located in segment 6 of the main pipe, this is, by definition, a feeder. It
should be noticed that two ports per riser were chosen for riser groups 1 and 2. As output, the
energy line (EL, PL, WL) and the bar chart showing discharges and velocities (Discharge (Bar
chart)) were selected.
Fig. 16: The graphical user interface of CorHyd
The following chapters explain the data input for each parameter and furthermore recommend
which design values should be used. The design philosophy is based on the idea that the
diffuser should operate with maximum flow and highest ambient water level elevation with
further performance tests for intermediate operational schemes.
4.1 Ambient Data
The first calculation should be done using the average water level elevation at discharge
location as value for the ambient water level elevation H d . Furthermore the average ambient
density ρ 0 should be specified. Performance checks should explicitly done for the case of
maximum average water level elevation (H max > H d ) and maximum average ambient density
Institut für Hydromechanik, Universität Karlsruhe 37