A three-dimensional numerical model is used to compute the water flow field in a straight flume with a cobble bed. The geometry of the numerical model is a replication of a physical model experiment where the largest cobbles were approximately 10 cm long. Detailed information on the digital terrain model of the bed was available from a laser scan of the bed. In the experiments, flow velocity pr...

the aim of this study was to determine the effect of win orientation (willingness to win) on sport commitment dimensions in women's football premier league of iran. research method was correlation and application in terms of aim. the population consisted of football players of 11 premier league teams in iran (n=200) who participated in the 2nd women's premier league and had at least 6...

A numerical wave flume based on the particle finite element method PFEM is applied to simulate wave overtopping for impermeable maritime structures. An assessment of the performance and robustness of the numerical wave flume is carried out for two different cases comparing numerical results with experimental data. In the first case, a well-defined benchmark test of a simple low-crested structur...

THE INTELLECTUAL INVENTION THAT SURPASSES ALL OTHERS AS THE MOST BENEFICIAL ADVANCE OF HUMAN HISTORY IS RARELY UNDERSTOOD OR APPRECIATED BY EDUCATED ADULTS. With dire consequences for such neglect, there has been no applause for this wondrous invention, no gratitude for its beneficence, no monuments to hail its priceless influence. Largely overlooked, ignored, or taken for granted, this unceleb...

The sluicing flume that was designed is less capable of silting up and losing its calibration than its counterparts of standard sharp-crested compound weir design. The laboratory work described here led to a refinement in the design in the form of a short flume set into the lowest section of a compound Crump weir gauging installation. Critical flow occurs near the exit of this flume, and it is ...

A detailed laboratory study was conducted to examine the effects of particle size on hysteretic sediment transport under time-varying rainfall. A rainfall pattern composed of seven sequential stepwise varying rainfall intensities (30, 37.5, 45, 60, 45, 37.5, and 30 mm h), each of 20 min duration, was applied to a 5 m 3 2 m soil erosion flume. The soil in the flume was initially dried, ploughed ...

Using lateral intake is a method of floodwater diverting. In arid and semi-arid areas, floodwatercontains a large amount of sediment that will be carried in to the intakes and it causes a reduction inchannel conveyance. Sediment is almost transported into the intake and it is settled in the upstreamside of lateral channel. Sedimentation in this zone reduces the conveyance of lateral channel and...

The specification of flow resistance is central to both simple and sophisticated hydraulic analyses. Yet it remains encumbered with the greatest level of uncertainty of all hydraulic parameters; despite over a century of field and flume experimentation. The selection of resistance coefficients for natural rivers remains more an empirical art than a matter of implementing robust scientifically v...

A series of 18 flume runs were conducted in a 6-m long, 0.5-m wide recirculating flume with a bed gradient of 0.8% to determine the influence of obstruction shape on the formation and characteristics of forced pools. Six differentshaped obstructions were added to the flume with the maximum width of the obstruction held constant at 20 cm, which equaled a 40% constriction of flow. The obstruction...