Results 31 to 40 of about 286,158 (300)

The flow field downstream of a hydraulic jump [PDF]

open access: yes, 1995
A control-volume analysis of a hydraulic jump is used to obtain the mean vorticity downstream of the jump as a function of the Froude number. To do this it is necessary to include the conservation of angular momentum.
Hornung, Hans G.   +2 more
core   +1 more source

Form and function in hillslope hydrology : in situ imaging and characterization of flow-relevant structures [PDF]

open access: yes, 2017
Thanks to Elly Karle and the Engler-BunteInstitute, KIT, for the IC measurements of bromide. We are grateful to Selina Baldauf, Marcel Delock, Razije Fiden, Barbara Herbstritt, Lisei Köhn, Jonas Lanz, Francois Nyobeu, Marvin Reich and Begona Lorente ...
C. Jackisch   +8 more
core   +6 more sources

Comparative Analysis of energy Losses in the Traditional and Triangular Flip Buckets [PDF]

open access: yesعلوم و مهندسی آبیاری, 2014
In this study the triangular flip bucket instead of circular shaped- with the same character but with different geometries- was studied. In this regard, the performance hydraulic overflow bucket with a bucket instead of the usual triangular shape, were ...
Mona Omidvarinia   +1 more
doaj  

Simulation for position control of DC motor using fuzzy logic controller [PDF]

open access: yes, 2013
The purpose of this project is to control the position of DC Motor by using Fuzzy Logic Controller (FLC) with MATLAB application. The scopes includes the simulation and modelling of DC motor, fuzzy controller and conventional PID controller as ...
Ali, Nur Illyana
core   +1 more source

Numerical Simulation of 3D Flow Pattern at Open-Channel Junctions [PDF]

open access: yesعلوم و مهندسی آبیاری, 2011
This paper numerically investigates the 3D flow pattern at the 900 equal-width rectangular open channel junction. The Reynolds-Stress Model (RSM) is applied to simulate the turbulent flow. The flow is analyzed under steady-state conditions.
S. H. Musavi Jahromi, R. Goudarzizadeh
doaj  

Intelligent Modeling and Experimental Investigation of the Collar's Impact on Reducing Scour around the Spur Dike [PDF]

open access: yesJournal of Soft Computing in Civil Engineering
Using a collar is a suitable way to protect structures in the water and reduce the scour depth around the structures. In this research, experiments were first carried out to determine the performance of the collar in reducing the scour depth of the spur ...
Hojat Karami   +2 more
doaj   +1 more source

Forecasting Daily and Monthly Reference Evapotranspiration in the Aidoghmoush Basin Using Multilayer Perceptron Coupled with Water Wave Optimization

open access: yesComplexity, 2021
The aim of this study is to evaluate the ability of soft computing models including multilayer perceptron- (MLP-) water wave optimization (MLP-WWO), MLP-particle swarm optimization (MLP-PSO), and MLP-genetic algorithm (MLP-GA), to simulate the daily and ...
Fatemeh Sayyahi   +2 more
doaj   +1 more source

A nyquist criterion for time-varying periodic systems, with application to a hydraulic test bench [PDF]

open access: yes, 2002
In this paper, stability results dedicated to sampled periodic systems are applied to a mechanical system whose stiffness exhibits quick variations: a hydraulic test bench used to achieve mechanical test on complex structures.
Garcia Iturricha, Aitor   +3 more
core  

Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology

open access: yesAdvanced Engineering Materials, EarlyView.
We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham   +7 more
wiley   +1 more source

Assessing Flow Characteristics in Chute Spillway of Neka-Gelvard Dam using Computational Fluid Dynamics [PDF]

open access: yesمحیط زیست و مهندسی آب, 2017
In recent years, as dam safety standards have increased, hydraulic engineers have become more eager to design an economical and safe energy dissipation system at the main flood evacuation course.
Milad Fazlollahnejad   +3 more
doaj  

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