Nov 2026· Journal of Hydraulic Engineering· Vol 152· 0 citations· 15 references
Abstract
In some applications, compound weirs are implemented as adjustable structures that create additional resistance locally to help divert flow in rivers. To ensure proper functioning, the added resistance needs to be implemented into numerical river hydrodynamic models, which are typically constructed with 1D or 2D coarse meshes. Therefore, their effects should be defined through a simple formula to enable implementation as subgrid energy losses. This study employed an experimental approach to estimate the flow resistance of submerged compound weirs under varying flow rates and configurations. A 1D analytical method based on momentum balance at the downstream side of the weir was proposed, with a correction term included to account for neglected factors. The modeled and measured results were in strong alignment for almost all 54 cases. A uniform weir configuration with the largest weir area required a higher correction coefficient for accurate predictions. Performance testing of the model on a variety of literature data shows that this method can be applied to various kinds of weirs.
Culverts are widely used to provide crossings over small rivers and can strongly influence flood hydraulics by controlling upstream water levels. During high flows, insufficient conveyance may cause pressurization and overtopping, with important implications for flood hazard assessment. Although computational fluid dyn...
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The occurrence of flotation phenomena during trench backfilling remains a well-recognized threat to the successful installation of offshore pipelines, with direct implications for both safety and cost. This study developed and assessed a simplified model based on Kynch’s batch sedimentation theory to predict the buoy...
F. Cecinato, G. Della Vecchia, P. Eikhout et al.· Journal of Geotechnical and...· 0 citations
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Hydraulic systems serve as the primary drive mechanism for deep-sea submersibles. As these vehicles descend, ambient pressure increases from 0 to 110 MPa, inducing elastic deformation in the spool and sleeve that alters damping forces and compromises flow stability. To address this challenge, we propose a segmentation...
Xin-Hao Li, Rou-Rou Dong, Chuang-Ting Xin et al.· Science in progress· 0 citations
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