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A Simple Hysteretic Constitutive Model for Unsaturated Flow
(Springer, 2017-11)
In this paper, we present a constitutive model to describe unsaturated flow that considers the hysteresis phenomena. This constitutive model provides simple mathematical expressions for both saturation and hydraulic ...
Study of the state a Francis turbine
(Politechnika Gdanska, Wydzial Oceanotechniki i Okretownictwa, 2013-04-01)
This paper presents a methodology to evaluate the technical state of a Francis turbine by shaft rotor dynamic simulation. There are several rotor dynamic criteria that define the technical state of a turbo-machine. To feed ...
Transient phenomena generated in emptying operations in large-scale hydraulic pipelines
(Cartagena de Indias, 2020-08-18)
Air pockets generated during emptying operations in pressurized hydraulic systems cause significant pressure drops inside pipes. To avoid these sudden pressure changes, one of the most widely used methods involves the ...
Propagation regimes, transition times, and approximate universality in 2D hydraulic fracture propagation with fluid lag
(Elsevier Science, 2021-09)
During its lifetime, a hydraulic fracture is known to traverse a trajectory in a region of a parametric space of non-dimensional evolutionary parameters. The topology of this diagram depends upon the phenomena considered. ...
Guía de laboratorio, utilizando elementos básicos de hidráulica, aplicados a un prototipo de canal rectangular, ubicado en la Universidad Politécnica Salesiana, Sede Quito, Campus Sur
(2022-07)
Students who are interested in a laboratory focused on the Hydraulic area have had to resort to external material, without being able to witness first-hand an adequate laboratory procedure. The laboratory guides were made ...
Digital platform approach for hydraulic characterization and detection of hydrodynamic phenomena in reversible turbomachines
(Universidad EAFITMaestría en IngenieríaEscuela de Ciencias Aplicadas e IngenieríaMedellín, 2022)
Hydropower is one of the most developed and utilized renewable energy sources in terms of installed capacity and reliability; therefore, it is one of the electricity production methods with the highest contribution worldwide ...