Exploració per autor "Rodríguez Pérez, Ivette María"
Ara es mostren els items 38-57 de 120
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Heat transfer analysis and numerical simulation of a parabolic trough solar collector
(2013-11-01)
Article
Accés obertParabolic trough solar collector is the most proven industry-scale solar generation technology today available. The thermal performance of such devices is of major interest for optimising the solar field output and increase ... -
Hybrid computation of the aerodynamic noise radiated by the wake of a subsonic cylinder
(Multidisciplinary Digital Publishing Institute (MDPI), 2023-08-21)
Article
Accés obertThe noise radiated by the flow around a cylinder in the subcritical regime at 𝑅𝑒𝐷=1×104 and at a subsonic Mach number of 𝑀=0.5 is here studied. The aerodynamic sound radiated by a cylinder has been studied with a ... -
Improved semi-analytical method for air curtains prediction
(2013-11)
Article
Accés restringit per política de l'editorialThe present study is devoted to the analysis and prediction of the efficiency of air curtains. The attention is focused on improving existing semi-analytical methods with the information from CFD simulations and experimental ... -
Influence of rotation on the flow over a cylinder at Re=5000
(2015-10-15)
Article
Accés restringit per política de l'editorialThe influence of the rotation ratio on the forces acting on a circular cylinder at Re ¼ 5000 has been investigated by means of direct numerical simulations (DNS). Spin ratios in the range 0-5 have been considered. The ... -
Influence of rotation on the flow over cylinder at RE=5000
(2014)
Text en actes de congrés
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Intermediate wake characteristics behind a circular cylinder
(European Research Community on Flow, Turbulence, and Conbustion (ERCOFTAC), 2023)
Text en actes de congrés
Accés obertThe intermediate wake of a circular cylinder at Reynolds number 3300 is studied by means of highly resolved large eddy simulations. The domain spans 100 cylinder diameters D downstream of the cylinder. The intermediate ... -
Large eddy and direct numerical simulations of a turbulent water-filled differentially heated cavity of aspect ratio 5
(2014-10-01)
Article
Accés obertNatural convection in a differentially heated cavity is characterized by different phenomena such as laminar to turbulent flow transition in the boundary layer, turbulent mixing, and thermal stratification in the core of ... -
Large-eddy simulations of fluid flow and heat transfer around a parabolic trough solar collector
(2012)
Text en actes de congrés
Accés obertThis study reports on numerical simulations of a parabolic trough solar collector to predict the aerodynamic behaviour and the convection heat transfer from the heat collector element. In the study, the variation of fluid ... -
Large-eddy simulations of the vortex-induced vibration of a low mass ratio two-degree-of-freedom circular cylinder at subcritical Reynolds numbers
(Elsevier, 2018-09)
Article
Accés obertThe vortex induced vibration phenomenon of a low mass ratio () two-degree-of-freedom circular cylinder at subcritical Reynolds numbers ( 5300, 11,000) has been investigated by means of large-eddy simulations. A low-dissipative ... -
Large-scale coherent structures in an asymmetrically heated channel flow
(European Research Community on Flow, Turbulence, and Conbustion (ERCOFTAC), 2023)
Text en actes de congrés
Accés obertA compressible direct numerical simulation (DNS) has been conducted to analyze the behavior of low-speed flows submitted to a strong temperature gradient in a fully developed and asymmetrically heated turbulent channel ... -
LES-based study of the roughness effects on the wake of a circular cylinder from subcritical to transcritical Reynolds numbers
(2017-10-27)
Article
Accés obertThis paper investigates the effects of surface roughness on the flow past a circular cylinder at subcritical to transcritical Reynolds numbers. Large eddy simulations of the flow for sand grain roughness of size k/D = 0.02 ... -
Limits of the Oberbeck–Boussinesq approximation in a tall differentially heated cavity filled with water
(2014-01-01)
Article
Accés obertThe present work assesses the limits of the Oberbeck–Boussinesq (OB) approximation for the resolution of turbulent fluid flow and heat transfer inside a tall differentially heated cavity of aspect ratio G = 6.67 filled ... -
Low-frequency unsteadiness in the vortex formation region of a circular cylinder
(2013-08-23)
Article
Accés obertThe presence of low-frequency fluctuations in the wake of bluff bodies have been observed in several investigations. Even though the flow past a circular cylinder at Re = 3900 (Re = U ref D/ν) has been the object of several ... -
Low-frequency variations in the wake of a circular cylinder at Re = 3900
(2011)
Comunicació de congrés
Accés obertFlow around cylindrical structures is of relevance for many practical applications. Knowledge of flow-related unsteady loading of such structures is crucial for hydro- and aerodynamic control and design. In order to obtain ... -
Modular object-oriented methodology for the resolution of molten salt storage tanks for CSP plants
(2013-09)
Article
Accés obertTwo-tank molten salt storages are the most widespread thermal energy storage technology within concentrated solar power plants. In spite of this, there are design aspects such as thermal losses control, optimisation of the ... -
Modular object-oriented methodology for the resolution of molten salt storage tanks for CSP plants
(2012)
Text en actes de congrés
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Multi-layered solid-PCM thermocline thermal storage concept for CSP plants. Numerical analysis and perspectives
(2015-03-15)
Article
Accés obertThermocline storage concept has been considered for more than a decade as a possible solution to reduce the huge cost of the storage system in concentrated solar power (CSP) plants. However, one of the drawbacks of this ... -
Multi-layered solid-PCM thermocline thermal storage for CSP. Numerical evaluation of its application in a 50 MWe plant
(2015-09-01)
Article
Accés obertThermocline storage concept is considered as a possible solution to reduce the cost of thermal storage in concentrated solar power (CSP) plants. Recently, a multi-layered solid-PCM (MLSPCM) concept—consisting of a ... -
Non-Oberbeck-Boussinesq effects in a turbulent tall water-filled differentially heated cavity
(Begell House, 2015)
Text en actes de congrés
Accés restringit per política de l'editorialThe present work studies the non-Oberbeck-Boussinesq (NOB) effects in a tall water-filled differentially heated cavity by means of direct numerical simulation. The obtained results reveal significant NOB effects for this ... -
Non-Oberbeck-Boussinesq natural convection in a tall differentially heated cavity
(2010)
Text en actes de congrés
Accés obertTurbulent flow in a water-filled rectangular parallelepiped tank of an integrated solar collector is analyzed by means of a set of two and three dimensional simulations. The geometry and the working conditions of the ...
