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https://hdl.handle.net/10784/28108

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Cartografía de la Diversidad Geo-Bio-Cultural de la Cuenca del Río Ranchería: Integración del Saber Indígena y la Ciencia para la Resiliencia Climática en La Guajira, Colombia
(2025) González-Tejada, Catalina; Marín-Cerón, Maria Isabel; Romero Epiayu, Jazmin; Villazón-Lobo, Karen Cecilia; Ospina-Garcés, Sandra; Delgado-Sánchez, Marisol
Diplomacia Científica para la Planificación Territorial Sostenible en La Guajira: Fortaleciendo la Diversidad Geo-Bio-Cultural en la Cuenca del Ranchería, Guajira, Colombia
(2025) Marín Cerón, Maria Isabel; Romero Epiayu, Jazmin; González Tejada, Catalina; Villazón, Karen Cecilia; Delgado Sánchez, Marisol
Gendered Geoscience for Territorial Sustainability: Integrating Geodiversity, Community Knowledge, and Acoustic Biodiversity in La Guajira
(LACCEI, 2025) González-Tejada, Catalina; Marín-Cerón, Maria Isabel; Romero Epiayu, Jazmin; Villazón-Lobo, Karen Cecilia; Ospina-Garcés, Sandra; Delgado-Sánchez, Marisol; Gutiérrez Romero, Genesis
This paper presents the outcomes of a research and innovation initiative developed within the Orquídeas Postdoctoral Program, promoted by the Ministry of Science, Technology, and Innovation of Colombia. The project was led by a female group: a postdoctoral fellow, a young researcher, a senior scientist, and a science communication manager from the School of Applied Sciences and Engineering at Universidad EAFIT, in close collaboration with a leader from the Fundación Movimiento Feminista Niñas y Mujeres Wayuu (MFNMW). Together, we co designed and implemented a territorial exploration framework that bridges scientific methods with ancestral wisdom, with a strong emphasis on gender equity, intercultural dialogue, and sustainable landscape management. The study focuses on geodiversity and morphometric diversity in La Guajira, a region of exceptional geological and cultural value. We identified 30 Sites of Geological Interest (SGIs) through integrated GIS analysis, field validation, and participatory mapping. Our findings indicate a strong correlation between morphometric and geological diversity, influenced by the structural dynamics of the Oca and Cuisa faults and the hydrological role of the Ranchería River. The initiative emphasizes intergenerational learning, the leadership of women in geosciences, and the contributions of local communities, especially Wayuu women, to sustainable resource governance. It aligns with Colombia’s national science missions in Bioeconomy and Territory, Science for Peace, and the Human Right to Food, and incorporates acoustic biodiversity related to bats as indicators of ecosystem health.
Co-construcción del Calendario Wayuu: Una Estrategia Comunitaria para la Acción Climática y la Resiliencia
(2025) Romero Epiayu, Jazmin; González Tejada, Catalina; Villazón, Karen Cecilia; Marín Cerón, Maria Isabel
A dialogue between spiritual knowledge and geo-social sciences for other understandings of climate change at the Rancheria River Bassin, Colombia
(2025) González-Tejada, Catalina; Marín-Cerón, Maria Isabel; Romero Epiayu, Jazmin; Villazón-Lobo, Karen Cecilia
Geodiversidad en la Guajira, Colombia
(Universidad EAFIT, 2025) Proyecto Orquideas Mujeres en la Ciencia n948: Tejedoras de la sostenibilidad en la Guajira bio-geo-culturalmente diversa
Simple-1: Development stage of the data transmission system for a solid propellant mid-power rocket model
(IOP PUBLISHING LTD, 2017-01-01) Yarce A.; Sebastián Rodríguez J.; Galvez J.; Gómez A.; García M.J.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
This paper presents the development stage of a communication module for a solid propellant mid-power rocket model. The communication module was named. Simple-1 and this work considers its design, construction and testing. A rocket model Estes Ventris Series Pro II® was modified to introduce, on the top of the payload, several sensors in a CanSat form factor. The Printed Circuit Board (PCB) was designed and fabricated from Commercial Off The Shelf (COTS) components and assembled in a cylindrical rack structure similar to this small format satellite concept. The sensors data was processed using one Arduino Mini and transmitted using a radio module to a Software Defined Radio (SDR) HackRF based platform on the ground station. The Simple-1 was tested using a drone in successive releases, reaching altitudes from 200 to 300 meters. Different kind of data, in terms of altitude, position, atmospheric pressure and vehicle temperature were successfully measured, making possible the progress to a next stage of launching and analysis. © Published under licence by IOP Publishing Ltd.
Multi-modal interface for a real-time CFD solver
(2007-01-01) Kasakevich, M.; Boulanger, P.; Bischof, W.F.; Garcia, M.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
Advances in computer processing power and networking over the past few years have brought significant changes to the modeling and simulation of complex phenomena. Problems that formerly could only be tackled in batch mode, with their results visualized afterwards, can now be monitored whilst in progress using graphical means. In certain cases, it is even possible to alter parameters of the computation whilst it is running, depending on what the scientist perceives in the current visual output. This ability to monitor and change parameters of the computational process at any time and from anywhere is called computational steering. Combining this capability with advanced multi-modal tools to explore the data produced by these systems are key to our approach. In this paper, we present an advanced multi-modal interface where sonification and 3D visualization are used in a computational steering environment specialized to solve real-time Computational Fluid Dynamics (CFD) problems. More specifically, this paper describes how sonification of CFD data can be used to augment 3D visualization. © 2006 IEEE.
Low altitude wind simulation over Mount Saint Helens using NASA SRTM digital terrain model
(IEEE COMPUTER SOC, 2007-01-01) Garcia, M. J.; Boulanger, P.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
On February 11, 2000, the Shuttle Radar Topography Mission (SRTM) was launched into space as part of one of the payload of the Shuttle Endeavor Using a new radar sweeping technique most of the Earth's surfaces was digitized in 3D in approximately 10 days. SRTM acquired enough data during its mission to obtain a near-global high-resolution database of the Earth's topography. This paper describe how this revolutionary data set can be used to simulate anywhere around the Earth low altitude wind conditions for various atmospheric conditions. More specifically, we will describe the various processing steps necessary to convert this high-resolution terrain model provided by the SRTM database into a Computational Fluid Dynamic (CFD) volumetric mesh that is compatible with an open source CFD solver called OpenFOAM running in parallel on large West-Grid supercomputers. This work is the result of a new virtual wind-tunnel under development at the University of Alberta. In the paper, we present wind flow over the Mount-Saint Helens in the United States for a simple wind flow boundary condition.
Design, construction and testing of a data transmission system for a mid-power rocket model
(IEEE Computer Society, 2017-01-01) Botero, A.Y.; Rodríguez, J.S.; Serna, J.G.; Gómez, A.; García, M.J.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
This paper presents the continuation of a previous work in the development of a communication module for a solid propellant mid-power rocket model named "Simple-1" mission. It considered the design, construction, and testing procedures related to the data transmission protocol and its data rate. The current phase considers the antenna's optimization, launching, and data analysis on-flight. In the actual optimization step, the antenna components were modified to increase the gain. A rocket model Estes Ventris Series Pro II® was used to carry in the payload section a communication module with several sensors in a CanSat form factor. The collected data was processed using an Arduino Mini micro-controller and transmitted using a radio module (Radiometrix) to a software defined radio (SDR) HackRF-based platform on the ground station. The printed circuit boards (PCBs) were designed and manufactured from commercial off the shelf (COTS) and assembled in a cylindrical rack structure similar to this small format satellite concept. The Simple-1 was tested with the help of a wind tunnel to validate the behavior of the antenna's subsystem and was proved in several launches using solid propellant motors reaching altitudes from 500-700 meters. Different experimental data such as altitude, position, atmospheric pressure, and vehicle temperature were successfully captured and analyzed. This demonstrates that it is possible to develop low cost near space activities, gradually installing capabilities in a teamwork. In this developing stage, the techniques to design and manufacture two layers PCB were appropriated by traditional circuit board etching methods. In addition, the SDR technology was studied and implemented for the telemetry architecture. The use of surface mounting devices (SMD) offers an alternative to reduce the volume of the module. In the future, it is expected to have more advances in the stability of the communication protocols, robust hardware manufacturing, and integration of electronic circuits in four-layer PCB, in order to contribute to the access to space in our region and local aerospace industry developments. © 2017 IEEE.
Modeling and simulation of an Underwater Remotely Operated Vehicle (ROV) for surveillance and inspection of port facilities using CFD tools
(2008-01-01) Valencia, R.A.; Ramírez, J.A.; Gutiérrez, L.B.; García, M.J.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
This article presents theoretical and computational studies with Computational Fluids Dynamics (CFD) tools of an Underwater Remotely Operated Vehicle (ROV), required to obtain reliable visual information, used for surveillance and maintenance of ship shells and underwater structures of Colombian port facilities. The thrust force is analyzed at the operational conditions by using CFD tools (FLUENT™, CFX™, COSMOSFLOW™) and the information about forces, torques and power of the vehicle's thrusters is obtained. The commercial propellers were modeled by using a reverse engineering process with a 3D scanner and Computer Aided Design (CAD) software (RAPIDFORM™). The results obtained with the CFD package allowed to evaluate several operating scenarios of the vehicle that are used for feedback purposes in the design process of the ROV before it be manufactured. Copyright © 2008 by ASME.
Building monitoring during the partial implosion stage
(International Society for Structural Health Monitoring of Intelligent Infrastructure, ISHMII, 2015-01-01) Garcés, J.; Botero, J.C.; Murià-Vila, D.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
The partial collapse of a building in Colombia caused severe damage to its structural components. An implosion was realized to induce the collapse of 50% of the deteriorated building. To evaluate the influence of the implosion on the remaining structure, a monitoring survey was realized using triaxial accelerometers. Time signals associated with ambient, seismic and forced vibration were obtained. A study of the records in the time and the frequency domain was made. The analysis of the information allowed determining some structural properties that were useful to calibrate the analytical model of the structure. © 2015, International Society for Structural Health Monitoring of Intelligent Infrastructure, ISHMII. All rights reserved.
Dynamic measurements on a Kaplan turbine: Model - Prototype comparison
(Institute of Physics Publishing, 2019-01-01) Angulo M.; Lucino C.; Botero F.; Rivetti A.; Liscia S.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
The purpose of this paper is to validate in prototype, the results related to the description of dynamic behaviour obtained in a Kaplan turbine model. A comparative analysis between model and prototype measurement at homologous operation conditions is presented. The phenomena of interest are tip vortex cavitation development and rotor stator interaction (rsi), associated to operation at high power outputs. The selection of suitable signal processing tools allows a clear identification of the role played by the modulation of the main rsi frequencies on cavitation phenomena. The comparison between pressure acceleration measurements on model and prototype at draft tube wall are consistent, both in time and frequency domain analysis. The acceleration measurement at the draft tube wall (manhole) is suggested as a trustworthy dynamic indicator for prediction (model) and monitoring (prototype) purposes. © 2019 Published under licence by IOP Publishing Ltd.
Low altitude wind simulation over mount saint helens using NASA SRTM digital terrain model
(2007-01-01) Garcia, M.J.; Boulanger, P.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
On February 11, 2000, the Shuttle Radar Topography Mission (SRTM) was launched into space as part of one of the pay load of the Shuttle Endeavor. Using a new radar sweeping technique most of the Earth's surfaces was digitized in 3D in approximately 10 days. SRTM acquired enough data during its mission to obtain a near-global high-resolution database of the Earth's topography. This paper describe how this revolutionary data set can be used to simulate anywhere around the Earth low altitude wind conditions for various atmospheric conditions. More specifically, we will describe the various processing steps necessary to convert this high-resolution terrain model provided by the SRTM database into a Computational Fluid Dynamic (CFD) volumetric mesh that is compatible with an open source CFD solver called OpenFOAM running in parallel on large West-Grid supercomputers. This work is the result of a new virtual wind-tunnel under development at the University of Alberta. In the paper, we present wind flow over the MountSaint Helens in the United States for a simple wind flow boundary condition. © 2006 IEEE.
Integrating computation into a civil engineering curriculum instructions at a colombian higher education institution
(Research in Engineering Education Network, 2019-01-01) Vieira C.; Gomez J.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
This paper presents a work in progress to integrate computation across the civil engineering curriculum at a Colombian University. Engineering programs all around the world have started to realize the value of preparing the future professionals with the knowledge and skills to solve complex problems using computational tools and methods such as modeling and simulation. The paper describes the challenges the institution is facing with these courses, propose an instructional approach to support student learning, and presents a preliminary data analysis for the adaptation of an instrument that will allow to assess students'self-beliefs about computing in the context of this curricular innovation. Copyright © 2019 Camilo Vieira and Juan Gomez.
Principal component analysis -PCA- and delone triangulations for PL approximation C-1-continuous 1-manifolds in R-N
(ACTA PRESS, 2004-01-01) Ruiz, OE; Cadavid, CA; Garcia, MJ; Martinod, R; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
A Method is presented which combines statistical (Principal Component Analysis) and deterministic (Voronoi-Delone) methods to find Piecewise Linear approximations of curves C-i(u) in R-3 sampled with statistical noise. If the curves are self-intersecting, there are a finite number of points in which they are not 1-manifolds. Otherwise, they are 1-manifolds in all extents. The combination presented, of PCA and V-D methods, allows the recovery of 1-manifold approximations for C-i(u) for self-intersecting quasi-planar and non self-intersecting curves. In the later case the PCA alone succeeds in finding 1-manifold PL approximations for them. The algorithm implemented finds applications in contour and shape reconstruction from noisy data, subject to sampling errors or blockage.
Structural optimization of as-built parts using reverse engineering and evolution strategies
(SPRINGER, 2008-06-01) García, M.J.; Boulanger, P.; Henao, M.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
In industry, some parts are prone to failures or their design is simply sub-optimal. In those critical situations, one would like to be able to make changes to the part, making it lighter or improving its mechanical resistance. The problem of as-built parts is that the original computer-aided design (CAD) model is not available or is lost. To optimize them, a reverse engineering process is necessary to capture the shape and topology of the original design. This paper describes how to capture the original design geometry using a semi-automated reverse engineering process based on measurement provided by an optical 3D sensor. Following this reverse engineering process, a Fixed Grid Finite Element method and evolutionary algorithms are used to find the optimum shape that will minimize stress and weight. Several examples of industrial parts are presented. These examples show the advantages and disadvantages of the proposed method in an industrial scenario. © 2007 Springer-Verlag Berlin Heidelberg.
Multi-modal interface for fluid dynamics simulations using 3-D localized sound
(SPRINGER, 2007-01-01) Taylor, R.; Kazakevich, M.; Boulanger, P.; Garcia, M.; Bischof, W.F.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
Multi-modal capabilities can be added to a simulation system in order to enhance data comprehension. We describe a system for adding sonification capabilities to a real-time computational fluid dynamics (CFD) simulator. Our system uses Max/MSP modules to add sonic properties to CFD solutions. The enhancements described in this paper allow users to locate sound sources in a 3-D environment using stereo auditory cues to identify data features. © Springer-Verlag Berlin Heidelberg 2007.
Integration of head-up display system in automotive industry: A generalized application
(SPIE-INT SOC OPTICAL ENGINEERING, 2013-01-01) Alejandro Betancur, J.; Osorio, Gilberto; Mejia, Alejandro; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
Throughout the development of the automotive industry, supporting activities related with driving has been material of analysis and experimentation, always seeking new ways to achieve greater safety for the driver and passengers. With the purpose of contributing to this topic, in order to contribute to this subject, this paper summarizes from past research experiences the use of Head-Up Display systems applied to the automobile industry, covering it from two main points of discussion: the first one, from a technical point of view, in which the main principles of optical design associated with a moderate-cost experimental set up are brought out; and the second one, an operational approach where an applied driving graphical interface is presented. Up to now, the results suggest that the experimental set up here discussed could be adaptable to any automobile vehicle, but it is needed further research and investment.
2D simulation flue implementing the lattice-boltzmann method
(TRANS TECH PUBLICATIONS LTD, 2014-01-01) Ruiz, D.B.; Mesa, A.A.; Alvis, R.G.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecánica Aplicada
Currently in the process of engineering, but increasingly implemented simulation methods since they are an economical and feasible to predict the behavior of some variable you wish to benefit. The problem of fluid simulation is a broad field of study, traditionally in this area are implemented domain discretization methods, volumes, differences or finite elements (Computational Fluid Dynamics), in this work, a different approach where the discretization is made on the physical properties of fluid and the fluid for reconstruction from its microscopic properties, simulating these, propagating Boltzmann distribution functions for the grid of nodes, this set is comprised of a fluid group of nodes, nodes fluid the border and nodes structure, docked the method to the boundary conditions necessary to simulate Glycerol in a pipe. © (2014) Trans Tech Publications, Switzerland.

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