22.01.2014 Views

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

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

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

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

Table 2: Local loss <strong>for</strong>mulations<br />

Type of<br />

Loss<br />

Inlet<br />

(Reference<br />

velocity is<br />

V)<br />

Definition<br />

Sharp edged inlet (Idelchik, 1986)<br />

ζ = 0.5<br />

Code (see files: barchart.m, plotlosses.m, report.m, time_series.m, totalHead.m):<br />

The value ζ = 0.5 is automatically <strong>for</strong>eseen in the code, if a feeder pipe exists. The loss is added<br />

only after the whole calculation directly in the result files. Although most of the constructions do<br />

have sharp edged inlets from the headworks into the feeder pipe other configurations may applied<br />

by using the following graphs <strong>an</strong>d ch<strong>an</strong>ging the code in the mentioned files (zeta_entry = “new<br />

value”).<br />

Rounded inlets (Idelchik, 1986, Miller, 1978)<br />

Institut für Hydromech<strong>an</strong>ik, Universität Karlsruhe 14

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!