Results 11 to 20 of about 19,254 (188)

Clast imbrication in coarse-grained mountain streams and stratigraphic archives as indicator of deposition in upper flow regime conditions [PDF]

open access: yesEarth Surface Dynamics, 2018
Clast imbrication is one of the most conspicuous sedimentary structures in coarse-grained clastic deposits of modern rivers but also in the stratigraphic record.
F. Schlunegger, P. Garefalakis
doaj   +1 more source

Comportamiento de las ecuaciones de Saint-Venant en 1D y aproximaciones para diferentes condiciones en régimen permanente y variable

open access: yesTecnura, 2015
The importance of the behavior of the Saint Venant equations and its implications for flow analysis applied to models of hydraulic transit is the main theme of this research, where the basis of the applications and uses of these mathematical models is ...
Gloria Estefany Amarís Castro   +2 more
doaj   +1 more source

Limiting Performance of the Ejector Refrigeration Cycle with Pure Working Fluids

open access: yesEntropy, 2023
An ejector refrigeration system is a promising heat-driven refrigeration technology for energy consumption. The ideal cycle of an ejector refrigeration cycle (ERC) is a compound cycle with an inverse Carnot cycle driven by a Carnot cycle. The coefficient
Jiawei Fu   +4 more
doaj   +1 more source

Analytic theory of narrow lattice solitons [PDF]

open access: yes, 2008
The profiles of narrow lattice solitons are calculated analytically using perturbation analysis. A stability analysis shows that solitons centered at a lattice (potential) maximum are unstable, as they drift toward the nearest lattice minimum.
Ablowitz M J   +18 more
core   +2 more sources

Hydraulics of free overfall in smooth triangular channels

open access: yesAin Shams Engineering Journal, 2021
The present study deals with the hydraulic behavior of smooth triangular channels with free overfall in order to obtain useful relationships for the estimation of end depth discharge (EDD) in terms of brink depth (yb), channel side slopes (m) and channel
Karzan Abdullah Muhsin   +1 more
doaj   +1 more source

Critical Behaviour and Universality in Gravitational Collapse of a Charged Scalar Field [PDF]

open access: yes, 1996
We summarize results from a study of spherically symmetric collapse of a {\it charged} (complex) massless scalar-field \cite{Hod}. We present an analytic argument which conjecture the generalization of the mass-scaling relation and echoing phenomena ...
Hod, Shahar, Piran, Tsvi
core   +3 more sources

Comparison of the Flow around Circular and Rectangular Emergent Cylinders with Subcritical and Supercritical Conditions

open access: yesFluids, 2023
There are multiple initiatives aimed at strengthening coastal communities against tsunami disaster risks, such as growing vegetation belts, construction of embankments, moats, and different hybrid alternatives.
Kannangara D. C. R. Dissanayaka   +1 more
doaj   +1 more source

Chlorophyll increase due to internal waves in the shelf-break of Gran Canaria Island (Canary Islands)

open access: yesScientia Marina, 2001
This paper shows observational evidence of internal wave generation and mixing in the southwest shelf-break region of Gran Canaria Island. Signals of periodic internal motion and related mixing events were detected through large pycnocline variations and
Pablo Sangrà   +3 more
doaj   +1 more source

Analytical solution to problems of hydraulic jump in horizontal triangular channels

open access: yesAin Shams Engineering Journal, 2013
A hydraulic jump is formed in a channel whenever supercritical flow changes to subcritical flow in a short distance. It can be used in triangular ditch irrigation to raise the downstream water surface.
I.M.H. Rashwan
doaj   +1 more source

Extended theory of hydraulic hysteresis in open channel flow [PDF]

open access: yes, 2017
The occurrence of hysteresis in a supercritical, open-channel flow approaching an obstacle has been recognized and investigated both experimentally and theoretically over the last few decades. However, the available theory and experimental investigations
Defina, Andrea, Viero, DANIELE PIETRO
core   +1 more source

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