Hydrology and Sediment Transport Processes

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This study investigates the combined effects of spur-dike submergence and ice cover on local scour, deposition ridge development, and flow structure in ice-affected channels. Laboratory experiments were conducted in a large outdoor flume to quantify the influence of spur-dike submergence ratio ( S = h 1 /h , where h 1…

Rivers play a central role in the Earth’s hydrological system, acting as pathways for freshwater transport and supporting ecosystems, human societies, and economic activities. Accurate monitoring of river discharge is essential for understanding the global water cycle, managing water resources, and addressing the incr…

Air-entraining vortices at intake structures present serious challenges to the functionality of water intake systems, resulting in reduced efficiency and possible damage to hydraulic equipment. The present study aims to predict the critical submergence, Sc, which is the minimum vertical distance between the free surfa…

This study investigated twin-propeller-induced scour on sandy seabeds with varying grain sizes (d50 = 0.11, 0.5, and 0.95 mm) through a series of laboratory experiments. The effects of propeller rotation speed (rpm), offset height (y0), propeller diameter (Dp), and sediment grain size (d50) on scour development were e…

Accurate streamflow estimation in ungauged catchments is vital for dimensioning drainage structures along rural and forest road networks, where local hydrometric data are often scarce. Addressing this research gap, this study integrates open-source topographic and climatic datasets with Global Runoff Data Centre (GRDC…

This study investigated the effects of small-sized in-river flood control structures on both flood susceptibility and stream ecosystems using the paired-watershed approach in Türkiye. Differences in daily streamflows among the pre-treatment, treatment, and post-treatment periods were determined using analysis of varia…

Changes in river channel morphology under the influence of natural and anthropogenic factors pose a serious threat to the stability of aquatic ecosystems and water resource use, especially in regions with limited hydrological information. This study presents, for the first time, a three-dimensional numerical investiga…

Unpredictable demands on bridge elements may occur when scour effects are combined with earthquake. In this study, the seismic performance of non-skewed (α = 0°) and skewed (α = 45°) bridges, and two distinct types of scour around the bridge piles with varying scour depths were examined numerically by using OpenSees p…

This study explores how hydraulic and geometric factors influence the air-demand ratio (ζ) in high-head, sharp-crested gated conduits, emphasizing conduit design and flow conditions. The analysis uses dimensional inputs: gate opening (Ø), height (y), conduit length (L), water flow area (Aw), and velocity (V), alongsid…

This study explores how hydraulic and geometric factors influence the air-demand ratio (ζ) in high-head, sharp-crested gated conduits, emphasizing conduit design and flow conditions. The analysis uses dimensional inputs: gate opening (Ø), height (y), conduit length (L), water flow area (Aw), and velocity (V), alongsid…

This research investigates aeration efficiency AE20 in high-head sluice-gated conduits, focusing on conduit structure/flow characteristics. The study incorporates dimensional variables such as the aspect ratio (α), gate opening degree (Ø), gate opening height (ho), conduit length (L), cross-sectional water flow area (…