Flow measurements in sloping rectangular channels with free overfall

Turan, Çagrı Kuşcu


Flow measurement in open channels by combined use of free surface PİV and CFD
Gharahjeh, Siamak; Aydın, İsmail; Department of Civil Engineering (2016)
Stream discharge measurement in open channels is of great importance in hydraulic engineering. For many years, classical devices such as propellers, current meters and weirs have been used for this purpose. In recent times, non-intrusive methods such as PIV (Particle Image Velocimetry) and PTV (Particle Tracking Velocimetry) have been very popular as they are more practical and convenient to automatically collect water free surface velocity which is further analyzed for discharge measurement. Image processi...
Flow dynamics and mixing processes in hydraulic jump arrays: Implications for channel-lobe transition zones
Dorrell, R. M.; Peakall, J.; Sumner, E. J.; Parsons, D. R.; Darby, S. E.; Wynn, R. B.; Ozsoy, E.; Tezcan, Devrim (2016-11-01)
A detailed field investigation of a saline gravity current in the southwest Black Sea has enabled the first complete analysis of three-dimensional flow structure and dynamics of a series of linked hydraulic jumps in,stratified, density-driven, flows. These field observations were collected using an acoustic Doppler current profiler mounted on an autonomous underwater vehicle, and reveal that internal mixing processes in hydraulic jumps, including flow expansion and recirculation, provide a previously unreco...
Flow Characterization of Full, Partial and Inclined Ground Effect
Koçak, Göktuğ; Nalbantoğlu, Volkan; Yavuz, Mehmet Metin (null; 2017-07-25)
Flow investigation in a channel reactor using chemically reacting boundary layer equations
Kenar, Doğu Hazar; Özyörük, Yusuf; Department of Aerospace Engineering (2023-1-13)
In this study, an algorithm for the solution of chemically reacting flows in a channel reactor is developed by using boundary layer equations. The governing flow equations are simplified under certain assumptions with the application of similarity transformation. As a consequence of simplification, the characteristics of flow equations are changed to parabolic partial differential equations (PDE). Parabolic PDEs can be solved by numerical techniques initially designed for ordinary differential equations (OD...
Flow structure and thickness of annular downflow layer in a circulating fluidized bed riser
Kim, SW; Külah, Görkem; Bi, HT; Lim, CJ; Grace, JR (2004-04-08)
Flow structures were determined in a circulating fluidized bed (CFB) riser (0.203 m i.d. x 5.9 m high) of FCC particles (d(p)=70 mum, rho(s)= 1700 kg/m(3)). A momentum probe was used to measure radial momentum flux profiles at several levels and to distinguish between upward and downward flow regions. Time-mean dynamic pressure (DeltaP(m)) decreases towards the wall in the range U-g=5-8 m/s, G(s)=10-340 kg/m(2) s. The thickness of the annular downflow layer based on DeltaP(m)=0 reaches a maximum with increa...
Citation Formats
Ç. K. Turan, “Flow measurements in sloping rectangular channels with free overfall,” M.S. - Master of Science, Middle East Technical University, 2002.