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

Table 4: CorHyd subroutines and their purpose
in progress, still to be finished
1. Simple Setup, one diffuser only
add_local_losses.m
GUI for additional local losses (if the user likes to put input
more losses on a port or riser than the ones applied in the
code)
barchart.m prints the results into a bar chart output
bend.m
calculates the angles of pipe bends having the node function
calculations.m
locations (x,y,z)
calculates diameters and areas, length and slope of the
diffuser/feeder Section, the static external heads outside
of the ports from input data
input and some
preparatory
calculations
check_length.m checks if the input is possible input check
choose system GUI input
clearVar.m clears all variables function
clogged_ports.m
checks and sorts the ports which the user marked to be
clogged. These ports have no discharge in the calculation
and should not be considered
function
commonData.m reads in common data and starts calculations.m input
commonfeederpipe.m calculates velocities and losses in the feeder pipe (no function
ports or risers attached)
create_boxes_diffuser.m creates additional input boxes for the complex system input
create_boxes_ports.m creates additional input boxes for the complex system input
darcy.m calculates λ the friction coefficient function
deviation_Thead.m calculates the deviation of the total head for the system output function
diffuserlosses.m calculates the loss coefficients ζ for the diffuser function
duckbill.m calculates losses ζ for duckbill valves function
feeder_pipes.m calculates the pressure along the feeder pipe general function
firstport.m
calculates the coordinates of first port of group and starts function
riser_location.m
firstuncloggedport.m locates the clogged ports and puts zero discharge on them function
Froude.m
calculates the port densimetric Froude number, necessary function
for further diffuser analysis, like purging
idh.m main program start
idh_txt.m main program without GUI but with txt input start txt
jetlosses.m calculates the loss coefficients ζ for the ports function
lastcommon.m calculates parameter at last common coordinate function
local_losses.m calculates and summarizes the local losses function
losses.m GUI for additional local losses input
losses_common_feeder.m calculates the pressure in common feeder pipes function
plot_losses.m plots the energy grade line and the hydraulic grade line output
pressure_riser.m
main function for calculating the pressures and discharges main function
along the diffuser
readvariables.m reads in the variables input
report.m creates the text output file output
riser_location.m
calculates the locations of the riser using the x,y,z input
of the nodes
riserlosses.m calculates the losses ζ in a riser function
run.m starts the different calculations start after GUI
sedimentation.m
calculates a criteria for start of sedimentation in the function
diffuser
show_setup.m displays the diffuser setup in a graph output
totalhead.m
calculates the maximum total discharge for a given starts the iteration
maximum total head
with given total
Institut für Hydromechanik, Universität Karlsruhe 34