Exploració per altres contribucions "Universitat Politècnica de Catalunya. LABSON - Laboratori de Sistemes Oleohidràulics i Pneumàtics"
Ara es mostren els items 1-20 de 43
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A novel method to determine the discharge coefficient of constant section nozzles under compressible dynamic flow conditions
(2019-07)
Article
Accés restringit per política de l'editorialThe present paper introduces a novel transient experimental method employed to determine the discharge coefficient of constant section nozzles of small diameters of 1 to 3 mm and with a length/diameter ratio of around one. ... -
A review of gerotor technology in hydraulic machines
(2019-06-24)
Article
Accés obertOver the years, numerous investigations have established the gerotor fundamentals. This work aims to provide a complete review of the literature from the last decade, focusing on the articles published in the past five ... -
A simplified methodology to evaluate the design specifications of hydraulic components
(Multidisciplinary Digital Publishing Institute, 2018-09-11)
Article
Accés obertThe fatigue of a hydraulic component inherently varies due to various factors that can be divided into two categories: structural and load spectrum variability. The effects of both variabilities must be considered when ... -
Additioning alfa fibres in cement mortar
(Universidad Católica de Chile (UC), 2018)
Article
Accés obertCement mortar is a broadly used construction material. Adding fibres into the fresh mortar is an effective reinforcing technique to overcome the drawbacks related with the little tensile and flexural strength. Using natural ... -
Air recovery assessment on high-pressure pneumatic systems
(2016-05-23)
Article
Accés obertA computational simulation and experimental work of the fluid flow through the pneumatic circuit used in a stretch blow moulding machine is presented in this paper. The computer code is built around a zero-dimensional ... -
An approach of the hydropower: advantages and impacts. A review
(Sciencedomain International, 2021-06)
Article
Accés obertThe present review shows a perspective of hydropower development, a renewable source that has a global installed capacity of 1308 GW with 9000 stations around the world. The document showed the advantages and the impacts ... -
An empirical methodology for prediction of shape and flow rate of a free-falling non-submerged liquid and casting iron stream
(2016-09-19)
Article
Accés obertThe work presented in this article demonstrates the use of an empirical and simplified approach based on an optical technique and a home-made ad hoc code that give knowledge of the shape and falling velocity of a free-falling ... -
Bond graph simulation of error propagation in position estimation of a hydraulic cylinder using low cost accelerometers
(2018-10-01)
Article
Accés obertThe indirect calculation from acceleration of transversal displacement of the piston inside the body of a double effect linear hydraulic cylinder during its operating cycle is assessed. Currently an extensive effort exists ... -
CFD Studies of the convective heat transfer coefficients and pressure drops in geometries applied to water cooling channels of the crotch absorbers of ALBA synchrotron light source
(2022)
Text en actes de congrés
Accés obertCurrently, the storage ring vacuum chambers of ALBA are protected by 156 crotch absorbers made of copper and Glidcop. After more than 10 years of operation as a thirdgeneration light source, the ALBA II project arose, ... -
Comparative cost per kilowatt of the latest hydropower projects in Ecuador
(2022-01)
Article
Accés obertLa hidroelectricidad es la mayor fuente renovable globalmente utilizada, para el 2020 ésta constituye el 77% de la matriz energética en Ecuador, pero los costos con los cuales se desarrollan estos proyectos generan el ... -
Computational fluid dynamics and particle image velocimetry assisted design tools for a new generation of trochoidal gear pumps
(2015)
Article
Accés obertTrochoidal gear pumps produce significant flow pulsations that result in pressure pulsations, which interact with the system where they are connected, shortening the life of both the pump and circuit components. And this ... -
Development of an app for compressible flow “App4Comp”
(Association for Computing Machinery (ACM), 2015)
Text en actes de congrés
Accés restringit per política de l'editorialIn this paper is discussed the development and operation of a new Android App made through Google’s platform App Inventor 2. This App is focused on solving classic problems related to compressible flow, dealing with the ... -
Discharge coefficients of a heavy suspension nozzle
(MDPI, 2021-03-15)
Article
Accés obertThe suspensions used in heavy vehicles often consist of several oil and two gas chambers. In order to perform an analytical study of the mass flow transferred between two gas chambers separated by a nozzle, and when ... -
Dynamics of a microsphere inside a spherical cavity with Newtonian fluid subjected to periodic contractions
(2022-07-05)
Article
Accés obertMechanical forces on the nucleus of a biological cell can play a significant role in its positioning within the cell. Some models for the migration of the nucleus are based on biochemical signals, which have a very slow ... -
Energy key performance indicators for mobile machinery
(2022-02-14)
Article
Accés obertMobile machinery manufacturers must face and deal with reducing fuel consumption, rising prices, and environmental pollution. The development of methods to evaluate the efficiency and effectiveness of the energy performance ... -
Estimation of wall shear stress using 4D flow cardiovascular MRI and computational fluid dynamics
(2016-10-26)
Article
Accés obertIn the last few years, wall shear stress (WSS) has arisen as a new diagnostic indicator in patients with arterial disease. There is a substantial evidence that the WSS plays a significant role, together with hemodynamic ... -
Experimental study of 3D movement in cushioning of hydraulic cylinder
(2017-05-25)
Article
Accés obertA double acting cylinder operation has been fully monitored in its key functional parameters, focused on characterization of end-of-stroke cushioning and starting phases. Being the cylinder performance reliant in the piston ... -
Experimental study on the impulsion port of a trochoidal wheeled pump
(2017-06-01)
Article
Accés obertAll positive displacement pumps produce a pulsating flow. The present paper reports the experimental measurement of steady flow pulsations in the outlet of the internal wheeled pump. In the measured flow, the manufacturing ... -
Flexible rod design for educational wind balance
(2016-03-07)
Article
Accés obertThis article provides a technical description of a flexible hinge for wind tunnel rigs. For academic purposes, the device was integrated into several rod flexures to build a home-made external wind balance system. The ... -
Gears or rotors-three approaches to design of working units of hydraulic machines
(Institute of Physics (IOP), 2019)
Text en actes de congrés
Accés obertThe gerotor pump has many advantages over other hydraulic pumps, such as high reliability, compactness, lower noise in running conditions etc. Considering the increasingly stringent regulations in the field of environmental ...
