Eduardo Ramos
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Eduardo Ramos has a total of 25 co-authors. Here are the top co-authors by number of shared publications:
- David Roberto Domínguez-Lozoya
Facultad de Ciencias Físico-Matemáticas, Universidad Autónoma de Sinaloa, Ciudad Universitaria, Culiacán 80000, Sinaloa, Mexico
2 shared publications G. Hernández-Cruz
Universidad Nacional Autónoma de México, Mexico City, México
2 shared publications- Guillermo Ramírez-Zúñiga
División Académica de Mecánica Industrial, Universidad Tecnológica Emiliano Zapata del Estado de Morelos, Av. Universidad Tecnológica No. 1, Emiliano Zapata 62760, Morelos, Mexico
2 shared publications - Manira E. Narvaez-Saucedo2 shared publications
- Manuel Alejandro Ramirez-Cabrera
Ingenieria Eléctrica , Tecnológico Nacional de México/Instituto Tecnológico Superior de Huauchinango , Av. Tecnológico 80, Col. 5 de Octubre , Huauchinango , Puebla. CP 73173 , Mexico
2 shared publications - Patricio Javier Valades-Pelayo
Instituto de Energías Renovables , Universidad Nacional Autónoma de México , Priv. Xochicalco s/n, Col. Centro , Temixco , Morelos. CP 62580 , Mexico
2 shared publications
Latest Publications
- Open Access
Validation of Turbulence Models for Predicting Pressure Coefficients for Natural Ventilation Purposes on an Isolated Low-Rise Building
The wind pressure coefficient is a key aerodynamic parameter for describing wind-induced pressure fields on building envelopes and is widely used as an input in air flow network (AFN) models. Most CFD validation studies rely on wall-averaged or a limited number of center-line sensors, implicitly assuming these represent the entire surface, which can mask significant local discrepancies. In this work, Reynolds-averaged Navier–Stokes (RANS) simulations are validated against pointwise pressure-tap data from the Tokyo Polytechnic University (TPU) database for an isolated low-rise hexahedral building. Wind incidence angles of 0°, 15°, 30°, and 45° are analyzed using five turbulence closures: standard, realizable, and RNG k-, and standard and SST k-. All simulations are performed in an icositetragon-shaped computational domain using OpenFOAM, allowing wind-direction changes without remeshing. While wall-averaged shows good agreement with experimental data for all models, local (tap-by-tap) comparisons reveal errors as high as 30–45% on leeward walls, exposing discrepancies that global metrics conceal. No single turbulence model performs best across all walls and incidence angles: RNG k- and SST k- alternate as the top performer depending on wall orientation and wind direction, a pattern quantified here through a wall-by-angle model-selection map based on the normalized mean square error. The results and the underlying local dataset provides practical guidance for selecting a turbulence model according to the dominant wind direction and facade orientation of a given natural-ventilation case, as well as a reference dataset for future wind-driven ventilation studies.Open AccessValidation of Turbulence Models for Predicting Pressure Coefficients for Natural Ventilation Purposes on an Isolated Low-Rise Building
The wind pressure coefficient is a key aerodynamic parameter for describing wind-induced pressure fields on building envelopes and is widely used as an input in air flow network (AFN) models. Most CFD validation studies rely on wall-averaged or a limited number of center-line sensors, implicitly assuming these represent the entire surface, which can mask significant local discrepancies. In this work, Reynolds-averaged Navier–Stokes (RANS) simulations are validated against pointwise pressure-tap data from the Tokyo Polytechnic University (TPU) database for an isolated low-rise hexahedral building. Wind incidence angles of 0°, 15°, 30°, and 45° are analyzed using five turbulence closures: standard, realizable, and RNG k-, and standard and SST k-. All simulations are performed in an icositetragon-shaped computational domain using OpenFOAM, allowing wind-direction changes without remeshing. While wall-averaged shows good agreement with experimental data for all models, local (tap-by-tap) comparisons reveal errors as high as 30–45% on leeward walls, exposing discrepancies that global metrics conceal. No single turbulence model performs best across all walls and incidence angles: RNG k- and SST k- alternate as the top performer depending on wall orientation and wind direction, a pattern quantified here through a wall-by-angle model-selection map based on the normalized mean square error. The results and the underlying local dataset provides practical guidance for selecting a turbulence model according to the dominant wind direction and facade orientation of a given natural-ventilation case, as well as a reference dataset for future wind-driven ventilation studies. - 15 December 2025
- Published by Elsevier in Computers & Fluids
- Vol. 306
A Markov matrix iterative splitting algorithm for incompressible flow
- 15 December 2025
- Published by Elsevier in Computers & Fluids
- Vol. 306
A Markov matrix iterative splitting algorithm for incompressible flow
- Open Access
- 6 December 2025
- Published by Elsevier in Computers & Fluids
- Vol. 306
A Markov Matrix iterative splitting algorithm for natural convection
- 6 December 2025
- Published by Elsevier in Computers & Fluids
- Vol. 306
Open AccessA Markov Matrix iterative splitting algorithm for natural convection
- 1 June 2021
- Published by American Physical Society (APS) in Physical Review Fluids
- Vol. 6 (6) , 064701
Vortex-induced vibration in a cylinder with an azimuthal degree of freedom
We present a numerical study on the motion of a rigid cylinder promoted by its interaction with an incoming flow when the cylinder is restricted to move along the arc of a circle and thus has only one degree of freedom. The analysis also includes the description of the flow around the cylinder, which is influenced by the motion of the cylinder. The Reynolds number, based on the diameter of the cylinder and the far-away incoming flow velocity, is 180. It is considered that the diameter of the circle is three times the diameter of the cylinder and that the ratio of the cylinder to fluid densities is 1.6. The mass and momentum conservation equations in two dimensions are solved in a Cartesian grid, and the presence and motion of the cylinder are resolved using the immersed boundary method. The motion of the cylinder and the flow are two-way coupled in the sense that the aerodynamic forces that drive the displacement of the cylinder result from the fluid-solid interaction, and in turn, the flow around the cylinder is modified by its motion. We analyze the initial transient dynamics and long-time behavior for two different cases. The present results illustrate that the motion of the cylinder and the torque are quasiperiodic with cycles composed of three oscillations with different amplitudes. The stagnation point and the boundary layers are displaced periodically around the rim of the cylinder according to the incoming direction of its relative velocity with respect to the fluid. The upper and lower separation points undergo similar periodic angular displacements. This effect is superposed to the alternating vortex shedding mechanism that occurs in fixed cylinders. Two rows of alternating vortices similar to von Karman vortex street are formed downstream of the cylinder, but their centers are farther apart from the symmetry line than those generated in the wake of a fixed cylinder; this effect is closely related to the coupling between the oscillatory motion of the cylinder and the vortex shedding process. The pressure field and the instantaneous streamlines are also presented and related to the dynamical features of the cylinder motion. It is found that the pressure is the dominant effect on the dynamics of the cylinder and its magnitude and the direction of the total force on the cylinder is related to the motion of the cylinder and the genesis and emission of vortices.
- 1 June 2021
- Published by American Physical Society (APS) in Physical Review Fluids
- Vol. 6 (6) , 064701
Vortex-induced vibration in a cylinder with an azimuthal degree of freedom
We present a numerical study on the motion of a rigid cylinder promoted by its interaction with an incoming flow when the cylinder is restricted to move along the arc of a circle and thus has only one degree of freedom. The analysis also includes the description of the flow around the cylinder, which is influenced by the motion of the cylinder. The Reynolds number, based on the diameter of the cylinder and the far-away incoming flow velocity, is 180. It is considered that the diameter of the circle is three times the diameter of the cylinder and that the ratio of the cylinder to fluid densities is 1.6. The mass and momentum conservation equations in two dimensions are solved in a Cartesian grid, and the presence and motion of the cylinder are resolved using the immersed boundary method. The motion of the cylinder and the flow are two-way coupled in the sense that the aerodynamic forces that drive the displacement of the cylinder result from the fluid-solid interaction, and in turn, the flow around the cylinder is modified by its motion. We analyze the initial transient dynamics and long-time behavior for two different cases. The present results illustrate that the motion of the cylinder and the torque are quasiperiodic with cycles composed of three oscillations with different amplitudes. The stagnation point and the boundary layers are displaced periodically around the rim of the cylinder according to the incoming direction of its relative velocity with respect to the fluid. The upper and lower separation points undergo similar periodic angular displacements. This effect is superposed to the alternating vortex shedding mechanism that occurs in fixed cylinders. Two rows of alternating vortices similar to von Karman vortex street are formed downstream of the cylinder, but their centers are farther apart from the symmetry line than those generated in the wake of a fixed cylinder; this effect is closely related to the coupling between the oscillatory motion of the cylinder and the vortex shedding process. The pressure field and the instantaneous streamlines are also presented and related to the dynamical features of the cylinder motion. It is found that the pressure is the dominant effect on the dynamics of the cylinder and its magnitude and the direction of the total force on the cylinder is related to the motion of the cylinder and the genesis and emission of vortices.
- Open Access
- 22 April 2021
- Published by MDPI AG in Sustainability
- Vol. 13 (9) , 4641
Laboratory Characterization of a Liquid Metal MHD Generator for Ocean Wave Energy Conversion
Harnessing ocean wave energy is an old challenge that has gained momentum in recent years. In this paper, we present the flow and electrical characterization of a prototype of an alternate liquid metal magnetohydrodynamic (MHD) generator at a laboratory scale which has the potential to make use of the energy of marine waves for its conversion into electrical energy. The eutectic alloy Galinstan, used as a working fluid, was driven in oscillatory motion in a duct of a rectangular cross-section exposed to a transverse magnetic field generated by permanent neodymium magnets. The electric current induced by the motion of the liquid metal in the magnetic field was collected through copper electrodes and delivered to the load. The oscillatory axial velocity component along the duct was measured using ultrasonic Doppler velocimetry for different oscillation frequencies. In turn, the output currents and voltages were measured for different operation conditions and the electric power and efficiency were estimated from experimental measurements. The coupling of this generator to a wave energy converter (WEC) is discussed.
- 22 April 2021
- Published by MDPI AG in Sustainability
- Vol. 13 (9) , 4641
Open AccessLaboratory Characterization of a Liquid Metal MHD Generator for Ocean Wave Energy Conversion
Harnessing ocean wave energy is an old challenge that has gained momentum in recent years. In this paper, we present the flow and electrical characterization of a prototype of an alternate liquid metal magnetohydrodynamic (MHD) generator at a laboratory scale which has the potential to make use of the energy of marine waves for its conversion into electrical energy. The eutectic alloy Galinstan, used as a working fluid, was driven in oscillatory motion in a duct of a rectangular cross-section exposed to a transverse magnetic field generated by permanent neodymium magnets. The electric current induced by the motion of the liquid metal in the magnetic field was collected through copper electrodes and delivered to the load. The oscillatory axial velocity component along the duct was measured using ultrasonic Doppler velocimetry for different oscillation frequencies. In turn, the output currents and voltages were measured for different operation conditions and the electric power and efficiency were estimated from experimental measurements. The coupling of this generator to a wave energy converter (WEC) is discussed.
- 1 July 2020
- Published by Elsevier in International Communications in Heat and Mass Transfer
- Vol. 116
Natural convective three-dimensional flow structure in a cylindrical container
- 1 July 2020
- Published by Elsevier in International Communications in Heat and Mass Transfer
- Vol. 116
Natural convective three-dimensional flow structure in a cylindrical container
- 25 May 2016
- Published by Springer Nature in Experiments in Fluids
- Vol. 57 (6) , 1-11
Evaporation dynamics and sedimentation pattern of a sessile particle laden water droplet
- 25 May 2016
- Published by Springer Nature in Experiments in Fluids
- Vol. 57 (6) , 1-11
Evaporation dynamics and sedimentation pattern of a sessile particle laden water droplet
- 1 November 2015
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 86 (11) , 116101
Note: Device for obtaining volumetric, three-component velocity fields inside cylindrical cavities
We describe a device designed and built to obtain the three-component, steady state velocity field in the whole volume occupied by a fluid in motion contained in a cavity with cylindrical walls. The prototype comprises a two-camera stereoscopic particle image velocimetry system mounted on a platform that rotates around the volume under analysis and a slip ring arrangement that transmits data from the rotating sensors to the data storage elements. Sample observations are presented for natural convection in a cylindrical container but other flows can be analyzed.
- 1 November 2015
- Published by AIP Publishing in Review of Scientific Instruments
- Vol. 86 (11) , 116101
Note: Device for obtaining volumetric, three-component velocity fields inside cylindrical cavities
We describe a device designed and built to obtain the three-component, steady state velocity field in the whole volume occupied by a fluid in motion contained in a cavity with cylindrical walls. The prototype comprises a two-camera stereoscopic particle image velocimetry system mounted on a platform that rotates around the volume under analysis and a slip ring arrangement that transmits data from the rotating sensors to the data storage elements. Sample observations are presented for natural convection in a cylindrical container but other flows can be analyzed.
- 6 March 2015
- Published by Springer Nature
- p. 375-384
Solidification in the Presence of Natural Convection in a Hele-Shaw Cell
- 6 March 2015
- Published by Springer Nature
- p. 375-384
Solidification in the Presence of Natural Convection in a Hele-Shaw Cell