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Dr. Johan Augusto Bocanegra Cifuentes
Genoa University

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Research Keywords & Expertise

0 Energy
0 Lattice Boltzmann method
0 numerical methods
0 thermosyphon
0 heat and mass transfer,

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Career Timeline

Genoa University

Graduate Student or Post Graduate

01 November 2018 - 30 August 2021




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Profile ImageMario Misale DIME – Department of Mecha...
Profile ImageDavide Borelli Università degli Studi di G...
Profile ImageGuglielmo Lomonaco DIME, Scuola Politecnica, Un...
Profile ImageAntonio Cammi Politecnico di Milano - Depa...
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Journal article
Published: 18 May 2021 in International Communications in Heat and Mass Transfer
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In this paper, an experimental study regarding the natural circulation in connected vertical rectangular loops is presented. Typically, the geometry of the natural circulation loops (NCL) is rectangular or toroidal and the analysis is focused on the thermo-hydraulic behaviour of a single working loop. In this study, a new approach referred to several NCLs simultaneously operated was investigated. In the experimental setup, the lower heated sections of the NCLs are connected. The tests were carried out by varying the internal diameter of the loops to investigate the influence of the mutual interaction between two adjacent NCLs. The data were analyzed by the modified Vijayan's correlation showing a good agreement. A simple relationship is proposed to normalize the data both in terms of inner tube diameter and heat sink temperature. The results obtained with two NCLs characterized by different internal diameters could be considered as the first attempt to try optimizing several connected NCLs.

ACS Style

Mario Misale; Johan Augusto Bocanegra; Annalisa Marchitto. Thermo-hydraulic performance of connected single-phase natural circulation loops characterized by two different inner diameters. International Communications in Heat and Mass Transfer 2021, 125, 105309 .

AMA Style

Mario Misale, Johan Augusto Bocanegra, Annalisa Marchitto. Thermo-hydraulic performance of connected single-phase natural circulation loops characterized by two different inner diameters. International Communications in Heat and Mass Transfer. 2021; 125 ():105309.

Chicago/Turabian Style

Mario Misale; Johan Augusto Bocanegra; Annalisa Marchitto. 2021. "Thermo-hydraulic performance of connected single-phase natural circulation loops characterized by two different inner diameters." International Communications in Heat and Mass Transfer 125, no. : 105309.

Review
Published: 22 September 2020 in Sustainability
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Nuclear engineering requires computationally efficient methods to simulate different components and systems of plants. The Lattice Boltzmann Method (LBM), a numerical method with a mesoscopic approach to Computational Fluid Dynamic (CFD) derived from the Boltzmann equation and the Maxwell–Boltzmann distribution, can be an adequate option. The purpose of this paper is to present a review of the recent applications of the Lattice Boltzmann Method in nuclear engineering research. A systematic literature review using three databases (Web of Science, Scopus, and ScienceDirect) was done, and the items found were categorized by the main research topics into computational fluid dynamics and neutronic applications. The features of the problem addressed, the characteristics of the numerical method, and some relevant conclusions of each study are resumed and presented. A total of 45 items (25 for computational fluid dynamics applications and 20 for neutronics) was found on a wide range of nuclear engineering problems, including thermal flow, turbulence mixing of coolant, sedimentation of impurities, neutron transport, criticality problem, and other relevant issues. The LBM results in being a flexible numerical method capable of integrating multiphysics and hybrid schemes, and is efficient for the inner parallelization of the algorithm that brings a widely applicable tool in nuclear engineering problems. Interest in the LBM applications in this field has been increasing and evolving from early stages to a mature form, as this review shows.

ACS Style

Johan Bocanegra Cifuentes; Davide Borelli; Antonio Cammi; Guglielmo Lomonaco; Mario Misale. Lattice Boltzmann Method Applied to Nuclear Reactors—A Systematic Literature Review. Sustainability 2020, 12, 7835 .

AMA Style

Johan Bocanegra Cifuentes, Davide Borelli, Antonio Cammi, Guglielmo Lomonaco, Mario Misale. Lattice Boltzmann Method Applied to Nuclear Reactors—A Systematic Literature Review. Sustainability. 2020; 12 (18):7835.

Chicago/Turabian Style

Johan Bocanegra Cifuentes; Davide Borelli; Antonio Cammi; Guglielmo Lomonaco; Mario Misale. 2020. "Lattice Boltzmann Method Applied to Nuclear Reactors—A Systematic Literature Review." Sustainability 12, no. 18: 7835.

Journal article
Published: 16 July 2020 in Applied Thermal Engineering
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In this paper, results from a new experimental setup consisting of four rectangular natural circulation loops are presented. The loops are vertically oriented, parallel and connected at the bottom; each one has an independent heat source of variable power and a common heat sink, and are studied under different configurations with varying parameters. The loops are symmetrical with 7mm inner diameter, using distilled water as the working fluid transporting heat from the source to the heat sink by means of natural circulation. The experimental data are compared with the Vijayan’s correlation showing a good agreement.

ACS Style

Mario Misale; Johan Augusto Bocanegra; Davide Borelli; Annalisa Marchitto. Experimental analysis of four parallel single-phase natural circulation loops with small inner diameter. Applied Thermal Engineering 2020, 180, 115739 .

AMA Style

Mario Misale, Johan Augusto Bocanegra, Davide Borelli, Annalisa Marchitto. Experimental analysis of four parallel single-phase natural circulation loops with small inner diameter. Applied Thermal Engineering. 2020; 180 ():115739.

Chicago/Turabian Style

Mario Misale; Johan Augusto Bocanegra; Davide Borelli; Annalisa Marchitto. 2020. "Experimental analysis of four parallel single-phase natural circulation loops with small inner diameter." Applied Thermal Engineering 180, no. : 115739.

Journal article
Published: 30 August 2021
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ACS Style

Johan Augusto Bocanegra Cifuentes. Review of acoustic hysteresis in flute-like instruments. 2021, 1 .

AMA Style

Johan Augusto Bocanegra Cifuentes. Review of acoustic hysteresis in flute-like instruments. . 2021; ():1.

Chicago/Turabian Style

Johan Augusto Bocanegra Cifuentes. 2021. "Review of acoustic hysteresis in flute-like instruments." , no. : 1.

Journal article
Published: 30 August 2021
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ACS Style

Johan Augusto Bocanegra Cifuentes. Precursor de la ciencia moderna: infinito y unidad en el pensamiento de Giordano Bruno. 2021, 1 .

AMA Style

Johan Augusto Bocanegra Cifuentes. Precursor de la ciencia moderna: infinito y unidad en el pensamiento de Giordano Bruno. . 2021; ():1.

Chicago/Turabian Style

Johan Augusto Bocanegra Cifuentes. 2021. "Precursor de la ciencia moderna: infinito y unidad en el pensamiento de Giordano Bruno." , no. : 1.