Results 31 to 40 of about 2,915 (310)

Energy Loss in Skimming Flow over Cascade Spillways: Comparison of Artificial Intelligence-Based and Regression Methods

Applied Sciences, 2020
In this study, the energy dissipation of cascade spillways was studied by conducting a series of laboratory experiments. Five spillways slope angles (α) (10°, 20°, 30°, 40°, and 50°), various step numbers (N) ranging from 4 to 75, and a wide range of ...
Meysam Nouri, Parveen Sihag, Farzin Salmasi, Ozgur Kisi   +3 more
doaj   +1 more source

Numerical modelling of flow in parallel spillways

, 2020
Mathematical modelling of single spillways is well documented in literature. For parallel spillways however, there is a lack of documented, verified, and validated cases.
Angele, K., Hedberg, P. A. Mikael, Angele, K.,, Andersson, L. Robin,, Andreasson, Patrik,, Andreasson, Patrik, Hellström, J. Gunnar I.,, Andersson, L. Robin, Andersson, Anders G., Hedberg, P. A. Mikael,, Hellström, J. Gunnar I., Andersson, Anders G.,   +11 more
core   +1 more source

Analysis of the longitudinal distribution of pressures near the ends of the vertical and horizontal faces in stepped spillway of slope 1V: 0.75H

RBRH, 2018
Stepped spillways have been widely used for flood runoff due to of their constructive advantages and in regards to energy dissipation during the drop, allowing downstream dissipation structures to be designed in smaller dimensions.
Fabrício Machado Osmar, Alba Valéria Brandão Canellas, Priscila dos Santos Priebe, Lorena Silva Saraiva, Eder Daniel Teixeira, Marcelo Giulian Marques   +5 more
doaj   +1 more source

Study on the influencing parameters of rough-strip energy dissipators of curved spillways based on orthogonal tests and numerical simulation

Journal of Hydroinformatics, 2023
Rough-strip energy dissipators (R-SEDs) can be arranged at the bend bottom of curved spillways to dissipate energy and divert flow for bend flow.
Honghong Zhang, Zhenwei Mu, Yiyun Wang, Zhen Zhou, Fan Fan, Fanqi Li, Hao Ma   +6 more
doaj   +1 more source

The Development of a Hydrological Method for Computing Extreme Hydrographs in Engineering Dam Projects

Hydrology
Engineering dam projects benefit society, including hydropower, water supply, agriculture, and flood control. During the planning stage, it is crucial to calculate extreme hydrographs associated with different return periods for spillways and diversion ...
Oscar E. Coronado-Hernández, Vicente S. Fuertes-Miquel, Alfonso Arrieta-Pastrana   +2 more
doaj   +1 more source

Prediction of air concentration in stepped spillways using data-oriented methods [PDF]

محیط زیست و مهندسی آب
The high flow velocity and the pressure reduction in the spillways cause damage to the spillways. In the present research, the application of Gaussian Process Regression (GPR) and Support Vector Machine (SVM) was investigated for predicting air ...
Kiyoumars Roushangar, Hamidreza Abbaszadeh, Reza Saadatjoo, Aydin Panahi   +3 more
doaj   +1 more source

Variable Stiffness Flexure Structures Enabled by Phase‐Change Gallium and Adhesive Interfacial Locking for Soft Robotic Applications

Advanced Engineering Materials, EarlyView.
A flexure‐based variable stiffness structure is developed by integrating phase‐change modulation and adhesive interfacial locking of gallium. The design enables a wide stiffness variability, transitioning from soft, flexible behavior to rigid, load‐supporting performance.
Sungjin Kim, Sohee John Yoon, Yong‐Lae Park   +2 more
wiley   +1 more source

Analysis of Effects of Rough Strip Energy Dissipator on Hydraulic Property of Bend Flow

Geofluids, 2022
Installing rough strip energy dissipators (R-SEDs) at the bottom of curved spillways can facilitate energy dissipation and flow stabilization. In this study, the effects of R-SEDs set at the bottom of a 60° bend in a spillway were examined. This spillway
Honghong Zhang, Zhenwei Mu, Fan Fan, Fanqi Li   +3 more
doaj   +1 more source

Soft Mechanical‐Electrical Logic Using Liquid Metal‐Filled 3D‐Printed Architectures

Advanced Engineering Materials, EarlyView.
We present 3D‐printed soft mechanical–electrical logic elements that use liquid metal–filled silicone tubes actuated by thermoplastic polyurethane/polylactic acid (TPU/PLA) architectures to produce Boolean operations. Complementary normally open and normally closed unit cells perform repeatable binary transitions and can be combined into more complex ...
Christoph Lehmann, Ryan Kalgreen, Laura M. Comella   +2 more
wiley   +1 more source

Unveiling Exsolution‐Induced Giant Electronic and Magnetic Property Changes in Non‐Stoichiometric Titanate Perovskite Thin Films

Advanced Materials, EarlyView.
A giant insulator to metal transition and emergent superparamagnetism are revealed by nanoparticle exsolution in non‐stoichiometric titanate perovskite thin films. By combining transport, synchrotron spectroscopy, and first‐principles calculations, this work reveals how defect reconfiguration and lattice reconstruction fundamentally reshape electronic ...
Sungil Kim, June Ho Lee, Yaolong Xing, Dongchang Kim, Haeseong Jeong, Mongjun Jeong, Manuel Valvidares, Stuart S. P. Parkin, Sang Ho Oh, Donghwa Lee, Hyojin Yoon, Hyeon Han   +11 more
wiley   +1 more source