Mostrando ítems 1-8 de 8

2D Simulation of Two-Phase Flow for Water Jet Cutting Processes with OpenFOAM

Florez, Eder; Rojas Suárez, Jhan Piero; Espinel Blanco, Edwin (Italia, 2021)

Cold cutting processes are characterized to perform the kinetic energy needed to cut hard materials with little mechanical effort by means of the ultra-high flow pressure pumps, which produce water jets with a flow pressure ...
Análisis de falla por fatiga en el eje conducido de la bomba Hillman 250b MTB para el transporte de crudo

García León, Ricardo Andres; Espinel Blanco, Edwin; Pérez, Eduar (Revista Colombiana de Tecnologías de AvanzadaColombia, 2019)

El objetivo del presente estudio, está centrado en localizar las causas que originaron la falla por fatiga en el eje conductor de la bomba Hillman 250B MTB doble tornillo para el despacho de crudo. El eje tuvo fractura ...
Design of an automated cheese cutting machine prototype

Espinel Blanco, Edwin; Ardila Delgado, Armando; Acevedo Peñaloza, Carlos Humberto (Contemporary Engineering SciencesBulgaria, 2018-11-30)

This work describes each of the parameters for the design of a prototype of an automated machine to make cuts in different types of cheese, in cubic form and slices. Each mechanical and structural component is designed, ...
Determination of the theoretical stress concentration factor in structural flat plates with two holes subjected to bending loads

Acevedo Peñaloza, Carlos Humberto; Rojas Suárez, Jhan Piero; Espinel Blanco, Edwin (Contemporary Engineering SciencesBulgaria, 2018-11-22)

Numerous research works have studied the stress distribution in sections with geometric discontinuities and the relationship with the theoretical factor of stress concentration using the finite element method. These works ...
Failure analysis methodology in industrial control valves using quality function

Rojas Suárez, Jhan Piero; Espinel Blanco, Edwin; Cárdenas-Gutiérrez, Javier Alfonso (International Review of Automatic ControlItalia, 2020-11-30)

Quality control methodologies and improvement methods have been applied to the process management in order to develop a set of fault diagnosis practices during the industrial operation of mechanical components in production ...
Operational Failure Detection Applied to Heat Exchange Systems Using State Observer Method

Rojas Suárez, Jhan Piero; Espinel Blanco, Edwin; Florez, Eder (International Review of Automatic ControlItalia, 2021)

The role of computational modeling is becoming predominant in the exploration and evaluation of new technologies. Numerical simulations have solved the most complex phenomena immersed in thermal sciences by the implementation ...
Sensitivity analysis applied to the thermodynamic diagnosis of combustion in a diesel engine with DIAGNO-DIESEL® software

Espinel Blanco, Edwin; Cárdenas-Gutiérrez, Javier Alfonso; Romero Garcia, Gonzalo (International Review of Mechanical EngineeringItalia, 2020-06)

At present, in order to mitigate the environmental impact of internal combustion machines and to increase their efficiency, it is necessary to carry out thermodynamic studies to predict their mechanical, thermal, and ...
Shaft pump power - effect of pipe network configuration

Obregon, Luis; Espinel Blanco, Edwin; Acevedo Peñaloza, Carlos Humberto (International Journal on Energy ConversionItalia, 2020-05)

Building design has often many engineering challenges to achieve the best possible energy and economic efficiencies. It is necessary to use technological tools capable of predicting with a high degree of accuracy the ...

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2D Simulation of Two-Phase Flow for Water Jet Cutting Processes with OpenFOAM
...
Florez, Eder | 2021

Cold cutting processes are characterized to perform the kinetic energy needed to cut hard materials with little mechanical effort by means of the ultra-high flow pressure pumps, which produce water jets with a flow pressure value of around 90 ksi. These manufacturing processes may be studied considering the fluid mechanics' principles that describe the transport phenomena for inviscid, continuous, and incompressible laminar flows in order to obtain theoretical results approximated to the process conditions. In this sense, the numerical modeling techniques applied in the analysis of water jet cutting processes define an efficient solution of the processes due to the physical analysis of the partial differential equations, which quantify the abrasive flow particles into the system. Taking into account the above, this research proposes a numerical analysis of the physical phenomena through the two-phase flow simulation in steady state with OpenFOAM. Abrasive and liquid phases are quantified to study the turbulent values, which describe the water jet behavior under different working conditions. A 2D model has been computed and discretized, considering the nozzle features in order to visualize and predict the abrasive mixture and flow rejected by using a low computational effort. Therefore, this numerical approach has been validated with a mesh independency analysis developed to verify the relation between the numerical data and the finite number of nodes computed in order to discretize a computational domain and to solve analytically the system proposed until reaching a high approximation between the model and the experimental values obtained during the cutting process by means of abrasive flows.

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Análisis de falla por fatiga en el eje conducido de la bomba Hillman 250b MTB para el transporte de crudo
...
García León, Ricardo Andres | 2019

El objetivo del presente estudio, está centrado en localizar las causas que originaron la falla por fatiga en el eje conductor de la bomba Hillman 250B MTB doble tornillo para el despacho de crudo. El eje tuvo fractura en el cuñero cerca de la zona de cambio de sección debido a malos procedimientos ingenieriles sin tener en cuenta los cálculos de diseño. Por esta razón, se realizó un análisis de causa raíz con el cual se demostró que el cuñero estaba mal diseñado, y de esta manera poder establecer las variables que influyeron en la falla. Luego de obtener esta información, se procedió a realizar el análisis del diseño óptimo del cuñero, igualmente el rediseño del concentrador de esfuerzo para evitar futuras fallas, mediante un análisis de fatiga, fuerzas pares y diagramas de esfuerzos cortante para materiales dúctiles del cual estaba fabricado, con lo que se determinó la vida del eje. Además, se efectuó el modelamiento por medio de elementos finitos para determinar el estado de los esfuerzos. Asimismo con los resultados obtenidos poder presentar los planes de acción para evitar futuras fallas tempranas en los sistemas de bombeo principales para el despacho de crudo en las empresas del sector petrolero.

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Design of an automated cheese cutting machine prototype
...
Espinel Blanco, Edwin | 2018-11-30

This work describes each of the parameters for the design of a prototype of an automated machine to make cuts in different types of cheese, in cubic form and slices. Each mechanical and structural component is designed, analyzed and calculated, with the implementation of a compression mechanism with power screw, simulating its operation in the SolidWorks Computer Aided Design (CAD) program, the equipment and accessories that constitute the control system for the automation of the prototype are selected, the programming of the Programmable Logical Control (PLC) in ladder language is carried out. Finally, the operation of the prototype is demonstrated through modeling and simulation with the use of the NI LabVIEW Softmotion module that allows integration with SolidWorks, making the application that involves some components of the prototype and controlling its movements from NI LabVIEW.

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Determination of the theoretical stress concentration factor in structural flat plates with two holes subjected to bending loads
...
Acevedo Peñaloza, Carlos Humberto | 2018-11-22

Numerous research works have studied the stress distribution in sections with geometric discontinuities and the relationship with the theoretical factor of stress concentration using the finite element method. These works have dealt with topics such as the influence of the length of pieces on the 𝐾�𝑡� factor in rectangular orthotropic plates; The behavior of the stress concentration factor on short shafts with section changes under bending loads; The theoretical factor of stress concentration in flat parts subjected to tension with "U" grooves; The estimation of the theoretical stress concentration factor 𝐾�𝑡� for a flat plate with two holes subjected to tension loads. Other studies have compared the stress distribution by applying three methods: elasticity theory, finite element analysis and experimental techniques. Results show that the finite element method is effective in solving the problem. The goal of this research is to determine the theoretical stress concentration factor for a flat plate with two holes subjected to bending applying the finite element method. The modeling of the plate, the application of the loads, the mesh generation and the simulation of the stress distribution were made using the software ANSYS® Workbench. Four holes with different sizes were worked and for each of them 10 different values of the distance between centers were taken. In this way the relationship between the factor 𝐾�𝑡�, the size of the holes and the distance between centers was found. This information is of great importance for the design of mechanical elements that are under these conditions.

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Failure analysis methodology in industrial control valves using quality function
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Rojas Suárez, Jhan Piero | 2020-11-30

Quality control methodologies and improvement methods have been applied to the process management in order to develop a set of fault diagnosis practices during the industrial operation of mechanical components in production lines. These practices are based on the reliability concept, which defines the failure probability due to the building or design processes and maintenance activities. In this sense, a quality methodology may be considered a powerful tool employed to determine the main causes of the recurring failure events associated with the downtime cost and the material losses during the industrial production. A quality function development may be conformed by four main phases: scheme design, components definition, engineering and quality control, and manufacturing work order. Taking into account the above, this paper proposes a quality function deployment method in order to define the appropriate control parameters, which define the needs of the specific production processes related to the functionality of the mechanical devices or the minimal requirements where inspection, test specifications, and failure diagnosis are developed. In this sense, this paper purposes a quality function development methodology in order to analyze the failure analysis of the pressure–control valve implemented in a hydraulic system to verify the possible causes of non-conformity and to define a set of alternatives that improve the production process. This decision-making problem has been based on two steps: strategic and operational terms, where each point has been resolved to define a successful development of this quality control methodology. The qualitative assessment of this particular study identifies a containment loss of the pressure-control valve used to maintain the reactor oil level in the hydraulic system.

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Operational Failure Detection Applied to Heat Exchange Systems Using State Observer Method
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Rojas Suárez, Jhan Piero | 2021

The role of computational modeling is becoming predominant in the exploration and evaluation of new technologies. Numerical simulations have solved the most complex phenomena immersed in thermal sciences by the implementation of sophisticated mathematical algorithms. This study incorporates a stationary thermodynamic model in order to evaluate the main operational parameters and the overall performance of heat exchange systems based on energy and exergy viewpoints while implementing unknown inputs. Moreover, the study introduces a UIO state observer technology in order to facilitate the early prediction of failure events in heat exchange systems using a detect, isolate and identify (FDI) methodology. Therefore, the proposed model has induced different fault conditions in order to examine the overall performance while integrating error state of signals criteria from the relative difference between the real and modeled estimates. The outcomes have demonstrated a good agreement for the estimated values of the mathematical algorithm considering the imminent presence of disturbance and interference that promotes modeling error. Finally, the results have outlined that the estimations of real operation conditions are not affected by the unknown inputs.

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Sensitivity analysis applied to the thermodynamic diagnosis of combustion in a diesel engine with DIAGNO-DIESEL® software
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Espinel Blanco, Edwin | 2020-06

At present, in order to mitigate the environmental impact of internal combustion machines and to increase their efficiency, it is necessary to carry out thermodynamic studies to predict their mechanical, thermal, and environmental behavior under different operational conditions. Within the thermodynamic modeling of thermal machines, it is necessary to carry out a process of characterization of the device under study. This article proposes a methodology for the characterization of 4JJ1 Isuzu Diesel engines applying combustion diagnosis, where the pressure signal in the combustion chamber is input, which is measured experimentally based on the angle of the crankshaft and how Exit the heat release curve. A motored procedure, in which the heat transfer process has been adjusted to the combustion chamber walls of the engine under study, has been performed. With this characterization, it has been verified that the change in 10% of the heat transfer adjustment coefficient in the chamber leads to a maximum change of 0.8% in the heat release rate through a sensitivity analysis of the developed model. The mass retained at the closing of the admission has a more pronounced effect, where a 10% change in this variable causes a 4.2% change in the heat release rate. A 10% change in the compression ratio has been observed, causing a maximum change of 6.1% in the heat release rate. Changes in the constants for piezoelectric transducer measurement, pressure level reference and crank angle measurement result in less than 5% change in maximum heat release rate values estimated by the diagnostic model.

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Shaft pump power - effect of pipe network configuration
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Obregon, Luis | 2020-05

Building design has often many engineering challenges to achieve the best possible energy and economic efficiencies. It is necessary to use technological tools capable of predicting with a high degree of accuracy the behavior of a pipe network system in order to obtain good designs that avoid problems in the future. This study is focused on the analysis of three pipe networks with different floors and the same configuration on each level. Four case studies have been developed in order to analyze the energy requirements and the outlet pressure of a pump for multiple pipe diameters, various floors, and fluid flow rates. The effects of the pipe diameter and the flow rate on the energy cost have been also analyzed. It has been observed that an increase in the flow rate in a pipeline of one inch of diameter causes a huge increase in the pump power when working on the net with a single floor. In addition, it has been found out that the higher the number of the floors is, the higher the pump powder is. However, this effect has not been significant when using pipelines with high diameters. Besides, it has been found out that the higher the number of the floors is, the higher the pressure drop in the system is. This effect is highly significant when using pipelines with small diameters. The total pump power cost had an exponential decay with the increase in pipe diameter.

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Listar BA. Grupos de Investigación por autor "ddf5c56fad665148eaacb953bbe77785"

2D Simulation of Two-Phase Flow for Water Jet Cutting Processes with OpenFOAM

Análisis de falla por fatiga en el eje conducido de la bomba Hillman 250b MTB para el transporte de crudo

Design of an automated cheese cutting machine prototype

Determination of the theoretical stress concentration factor in structural flat plates with two holes subjected to bending loads

Failure analysis methodology in industrial control valves using quality function

Operational Failure Detection Applied to Heat Exchange Systems Using State Observer Method

Sensitivity analysis applied to the thermodynamic diagnosis of combustion in a diesel engine with DIAGNO-DIESEL® software

Shaft pump power - effect of pipe network configuration

Envíos recientes

2D Simulation of Two-Phase Flow for Water Jet Cutting Processes with OpenFOAM

Análisis de falla por fatiga en el eje conducido de la bomba Hillman 250b MTB para el transporte de crudo

Design of an automated cheese cutting machine prototype

Determination of the theoretical stress concentration factor in structural flat plates with two holes subjected to bending loads

Failure analysis methodology in industrial control valves using quality function

Operational Failure Detection Applied to Heat Exchange Systems Using State Observer Method

Sensitivity analysis applied to the thermodynamic diagnosis of combustion in a diesel engine with DIAGNO-DIESEL® software

Shaft pump power - effect of pipe network configuration

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Listar BA. Grupos de Investigación por autor "ddf5c56fad665148eaacb953bbe77785"

2D Simulation of Two-Phase Flow for Water Jet Cutting Processes with OpenFOAM ﻿

Análisis de falla por fatiga en el eje conducido de la bomba Hillman 250b MTB para el transporte de crudo ﻿

Design of an automated cheese cutting machine prototype ﻿

Determination of the theoretical stress concentration factor in structural flat plates with two holes subjected to bending loads ﻿

Failure analysis methodology in industrial control valves using quality function ﻿

Operational Failure Detection Applied to Heat Exchange Systems Using State Observer Method ﻿

Sensitivity analysis applied to the thermodynamic diagnosis of combustion in a diesel engine with DIAGNO-DIESEL® software ﻿

Shaft pump power - effect of pipe network configuration ﻿

Envíos recientes

2D Simulation of Two-Phase Flow for Water Jet Cutting Processes with OpenFOAM

Análisis de falla por fatiga en el eje conducido de la bomba Hillman 250b MTB para el transporte de crudo

Design of an automated cheese cutting machine prototype

Determination of the theoretical stress concentration factor in structural flat plates with two holes subjected to bending loads

Failure analysis methodology in industrial control valves using quality function

Operational Failure Detection Applied to Heat Exchange Systems Using State Observer Method

Sensitivity analysis applied to the thermodynamic diagnosis of combustion in a diesel engine with DIAGNO-DIESEL® software

Shaft pump power - effect of pipe network configuration

Portales Institucionales

2D Simulation of Two-Phase Flow for Water Jet Cutting Processes with OpenFOAM

Análisis de falla por fatiga en el eje conducido de la bomba Hillman 250b MTB para el transporte de crudo

Design of an automated cheese cutting machine prototype

Determination of the theoretical stress concentration factor in structural flat plates with two holes subjected to bending loads

Failure analysis methodology in industrial control valves using quality function

Operational Failure Detection Applied to Heat Exchange Systems Using State Observer Method

Sensitivity analysis applied to the thermodynamic diagnosis of combustion in a diesel engine with DIAGNO-DIESEL® software

Shaft pump power - effect of pipe network configuration