Results 251 to 260 of about 216,543 (287)

An analytical model for variation of exit gradient downstream of a hydraulic structure with inclined downstream cutoff resting on infinite anisotropic soil

International Journal of Geotechnical Engineering, 2023
Rafea Al-Suhili, Rizgar Ahmed Karim
openaire   +3 more sources

Exit Gradient in Anisotropic Porous Medium

Journal of Hydraulic Engineering, 1983
The inclination of flow lines at the exit on the downstream side of a hydraulic structure has been found for a known degree of anisotropy and a given direction for the principal permeability. An analytical procedure is presented to find the exit gradient for steady confined flow in an anisotropic porous medium from known exit gradient of the ...
Govinda Chandra Mishra, A. Siva Reddy
openaire   +1 more source

Uplift force, seepage, and exit gradient under diversion dams

Proceedings of the Institution of Civil Engineers - Water Management, 2013
Correct estimation of uplift force, seepage discharge and exit gradient is very important in stability analysis of hydraulic structures. In this research, by carrying out a set of experiments on a laboratory model, the application of various methods for estimating uplift pressure and seepage discharge under hydraulic structures, and the exit gradient ...
E. Amiri Tokaldany, H. Khalili Shayan
openaire   +1 more source

Probabilistic Analysis of Exit Gradients due to Steady Seepage

Journal of Geotechnical and Geoenvironmental Engineering, 1998
The traditional approach for estimating the exit gradient \ii\i\de downstream of water retaining structures due to steady seepage is to assume homogeneous soil properties and proceed deterministically, perhaps using flow-net techniques. Once the exit gradient is estimated, a large safety factor of at least five or six is applied.
D. V. Griffiths, Gordon A. Fenton
openaire   +1 more source

Analytical Determination of Seeping Soil Slopes of a Constant Exit Gradient

ZAMM, 2002
Soil slopes satisfying the condition of a constant exit gradient and the seepage face condition are studied by the methods of complex analysis. For a given slope \(y=F(x)\) the exit gradient \(|\nabla h|_F \) is determined from the flow problem. In this paper the authors consider the case when \(|\nabla h|_F =J/k\) along the slope, where \(J\) is a ...
Kacimov A., Obnosov Y.
openaire   +4 more sources

Quantifying groundwater dependency of riparian surface hydrologic features using the exit gradient

Hydrological Processes, 2016
AbstractNumerical groundwater flow models necessarily are limited to subsurface flow evaluation. It is of interest, however, to examine the possibility that, for unconfined aquifer systems, they could be used to proportionately measure the magnitude of seepage they estimate when these aquifers intersect the landscape surface. Our goal in this study was
Barton R. Faulkner, Scott G. Leibowitz, Timothy J. Canfield, Justin F. Groves   +3 more
openaire   +1 more source

Abstract 14985: Presence of Repolarization Gradients Reverses Post-infarct Ventricular Tachycardia Exit and Entrance Sites in Personalized Digital Hearts

Circulation, 2020
Introduction: Post-infarct ventricular tachycardias (VT) arise due to structural remodeling (scarring). Physiological repolarization gradients (apicobasal and transmural) exist in the human heart, but the effects on post-infarct VT dynamics are unknown.
Eric Sung, Adityo Prakosa, Natalia Trayanova   +2 more
openaire   +1 more source

Effect of Varying Geometrical Configuration of Sheet Piles on Exit Gradient and Uplift Pressure

2018
Seepage becomes an inevitable concern when dealt with earthen dams, as the impounded water seek paths of least resistance through the dam and its foundation. Seepage, if uncontrolled, can erode soil from the embankment or foundation causing progressive or rapid erosion and piping of the embankment or foundation soils.
Priyanka Talukdar, Arindam Dey
openaire   +1 more source

Induced pressure gradients due to entrance and exit effects in electroosmotically driven flows through nanopores within the continuum regime

Journal of Physics D: Applied Physics, 2008
In this paper, a theoretical model is devised for analysing the effects of induced pressure gradients on electroosmotically driven nanopore flows within the continuum regime, without presuming the validity of the Boltzmann distribution of ionic charges. The charge density distributions are obtained from the conservation considerations of the individual
Suman Chakraborty, Sourav Padhy
openaire   +1 more source

Collaborative effects of vehicle speed and illumination gradient at highway intersection exits on drivers’ stress response capacity

Accident Analysis & Prevention
Inadequate visibility is a critical factor contributing to the heightened occurrence of nighttime accidents at highway intersections. The installation of smart streetlights which are equipped to detect vehicle positions and speed information, thereby dynamically adjusting illumination, offers a promising solution to significantly reduce nighttime ...
Hongtao, Li, Linhong, Wang, Menglin, Yang, Yiming, Bie   +3 more
openaire   +2 more sources