The aim of this experimental study was to investigate the hydraulic conditions at which air-entraining
vortices would form in front of horizontal intakes and to determine the ways of eliminating the
formation of these vortices by testing anti-vortex devices. For these reasons, a series of experiments
were conducted in an experimental setup composed of a reservoir having the dimensions of 3.10 m x
3.10 m x 2.20 m and a pump connected to the intake pipe. Within the reservoir, between the concrete
side walls adjustable plexiglass side walls were placed to provide the desired wall clearance for the
intake pipes. Six pipes of different diameters / 5 cm, 10 cm, 14.4 cm, 19.4 cm, 25 cm and 30 cm were
horizontally mounted on the front side of the reservoir one by one, and for each case, a wide range of
discharges was provided from the reservoir by the pump.
Under symmetrical approach flow conditions and zero bottom wall clearance, the experiments were
repeated for each intake pipe and the &ldquo / critical submergence depths&rdquo / for the tested discharges were
determined. At some of the discharges, the effect of horizontal plates located on the top of the pipe
entrance as anti-vortex devices on the elimination of the vortices was investigated. The measured
critical submergence depths were related in dimensionless form to the relevant dimensionless
parameters and empirical equations were derived. These equations were compared with similar ones
available in the literature and it was shown that the agreement between them was quite good.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12615341/index.pdf |
| Date | 01 January 2013 |
| Creators | Baykara, Ali |
| Contributors | Gogus, Mustafa |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | Access forbidden for 1 year |
Page generated in 0.0019 seconds