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simulation model » simulacion del (Expander búsqueda), simulacion monte (Expander búsqueda), equation model (Expander búsqueda)
1
artículo
Publicado 2019
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This research project modeled and simulated a ventilation system at a Mining Concession, obtaining real-time information regarding the fans used to ventilate the mine. The simulation was developed using the VENTSIM 5 software, which also helped define the number of fans and the operating parameters required, field information, mine dimensions, the mining method, production, geothermal gradient, gas emission, air stream, and air pressure. In addition, the results from software operation revealed the need to open chimneys and use fans. Furthermore, the results also suggest that a specialist dedicated to ventilation and fan maintenance must be hired to formalize mining operations as per the Occupational Safety and Health Mining Regulations from Executive Action No. 024-2016-EM as this Mining Concession is currently operating without license.
2
artículo
Publicado 2019
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This research project modeled and simulated a ventilation system at a Mining Concession, obtaining real-time information regarding the fans used to ventilate the mine. The simulation was developed using the VENTSIM 5 software, which also helped define the number of fans and the operating parameters required, field information, mine dimensions, the mining method, production, geothermal gradient, gas emission, air stream, and air pressure. In addition, the results from software operation revealed the need to open chimneys and use fans. Furthermore, the results also suggest that a specialist dedicated to ventilation and fan maintenance must be hired to formalize mining operations as per the Occupational Safety and Health Mining Regulations from Executive Action No. 024-2016-EM as this Mining Concession is currently operating without license.
3
tesis de grado
Publicado 2019
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This research project modeled and simulated a ventilation system at a Mining Concession, obtaining real-time information regarding the fans used to ventilate the mine. The simulation was developed using the VENTSIM 5 software, which also helped define the number of fans and the operating parameters required, field information, mine dimensions, the mining method, production, geothermal gradient, gas emission, air stream, and air pressure. In addition, the results from software operation revealed the need to open chimneys and use fans. Furthermore, the results also suggest that a specialist dedicated to ventilation and fan maintenance must be hired to formalize mining operations as per the Occupational Safety and Health Mining Regulations from Executive Action No. 024-2016-EM as this Mining Concession is currently operating without license.
4
objeto de conferencia
The authors gratefully acknowledge support for this Project from The Universidad Catolica San Pablo, The Universidad Nacional de San Agust´ın and The CONCYTEC (Peruvian Research Council).
5
artículo
In the present work, the simulation model of groundwater flow in a stationary regime has been elaborated in the area of the Ticlio mining unit over 300 hectares of surface and 4814 meters of altitude. Geologically, the unit is made up of karst aquifers and fissured and clastic aquitards, which store and carry water. The main source of recharge of the aquifers are the precipitations that occur during the rainy periods and the melting of the glaciers, which are stored in the San Nicolás and Santa Catalina lagoons, constituting these as the recharge sources of the mentioned aquifers during the periods of low water. The analytically estimated hydraulic conductivity and hydraulic transmissivity are 0.068 m / d and 6.48 m2 / d respectively, values that must be corroborated by hydraulic tests to be carried out in wells or piezometers. The balance obtained with the aquifer simulatio...
6
artículo
Publicado 2018
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The present study addresses aspects that must be considered in the sizing of the equipment for material loading and haulage (ore and waste) in an open-pit mine in the Central-West Region of Brazil. This is a complex process because a significant number of variables that limit the activities intrinsic to the loading and hauling operations are involved in the analysis. Such variables are: production rates per unit of time, physical-mechanical characteristics of the material, hauling distances, topography, access design, hauling routes, cycles, and fleet performance (truck, shovel). Additionally, there are other external variables that also condition a normal operation, such as rain, snow, fog and seismic movement. The purpose of this study is to size the fleet of the loading and hauling equipment that fulfills the processing plant requirements in an efficient manner.
7
artículo
Publicado 2018
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The present study addresses aspects that must be considered in the sizing of the equipment for material loading and haulage (ore and waste) in an open-pit mine in the Central-West Region of Brazil. This is a complex process because a significant number of variables that limit the activities intrinsic to the loading and hauling operations are involved in the analysis. Such variables are: production rates per unit of time, physical-mechanical characteristics of the material, hauling distances, topography, access design, hauling routes, cycles, and fleet performance (truck, shovel). Additionally, there are other external variables that also condition a normal operation, such as rain, snow, fog and seismic movement. The purpose of this study is to size the fleet of the loading and hauling equipment that fulfills the processing plant requirements in an efficient manner.
8
artículo
Publicado 2019
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In this work three mathematical models of transmission lines are shown, the most used, to simulate electromagnetic transients in power systems. In addition, its main characteristics, advantages and disadvantages are mentioned. Likewise, the algorithms are shown in the form of flow charts for the simulations of the transients. Finally, the results of simulations of maneuvering surges in a single-phase transmission line using the MATLAB software are shown.
9
artículo
Publicado 2019
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In this work three mathematical models of transmission lines are shown, the most used, to simulate electromagnetic transients in power systems. In addition, its main characteristics, advantages and disadvantages are mentioned. Likewise, the algorithms are shown in the form of flow charts for the simulations of the transients. Finally, the results of simulations of maneuvering surges in a single-phase transmission line using the MATLAB software are shown.
10
tesis de maestría
Publicado 2016
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The following work focuses on the kinematic and dynamic study of a four-wheeled robot, which is equipped with omnidirectional Mecanum wheels. The main objective of the thesis is to obtain a mathematical model from which both the kinematics and kinetics of the robot can be analyzed. Furthermore, the study presents a methodology to optimize the torques (and subsequent associated voltages) provided by each of the motors on the robot for a given trajectory. A system in which a non-powered trailer pulled by the robot is also analyzed at a kinematic level. In this stage, four different cases are considered. The construction of the trailer is also described on this work. In the first chapter, the global state of the art on analysis and control of omnidirectional robots (with focus on robots with Mecanum wheels) is presented. In the second chapter, the physical considerations for the general mov...
11
tesis de maestría
Publicado 2016
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The following work focuses on the kinematic and dynamic study of a four-wheeled robot, which is equipped with omnidirectional Mecanum wheels. The main objective of the thesis is to obtain a mathematical model from which both the kinematics and kinetics of the robot can be analyzed. Furthermore, the study presents a methodology to optimize the torques (and subsequent associated voltages) provided by each of the motors on the robot for a given trajectory. A system in which a non-powered trailer pulled by the robot is also analyzed at a kinematic level. In this stage, four different cases are considered. The construction of the trailer is also described on this work. In the first chapter, the global state of the art on analysis and control of omnidirectional robots (with focus on robots with Mecanum wheels) is presented. In the second chapter, the physical considerations for the general mov...
12
artículo
Publicado 2012
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The Instituto para el Depósito de Valores (INDEVAL) is the Central Securities Depository of Mexico. It is the only Mexican institution authorized to perform in an integrated manner the activities of safe-keeping custody management clearing settlement and transfer of securities. In this article we report the modeling simulation and analysis of a new Securities Settlement System (SSS) implemented by INDEVAL as part of a project for the implementation of a safer and more efficient operating system. The main objective of this research was to use reduced amounts of cash and securities within reasonable periods of time for the settlement of securities of the Mexican market. A linear programming model for the netting and clearing of operations was used. The performance of the new SSS was evaluated by performing experiments using a deterministic simulation model under different operation parame...
13
artículo
Publicado 2012
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The Instituto para el Depósito de Valores (INDEVAL) is the Central Securities Depository of Mexico. It is the only Mexican institution authorized to perform, in an integrated manner, the activities of safe-keeping, custody, management, clearing, settlement and transfer of securities. In this article, we report the modeling, simulation and analysis of a new Securities Settlement System (SSS) implemented by INDEVAL, as part of a project for the implementation of a safer and more efficient operating system. The main objective of this research was to use reduced amounts of cash and securities, within reasonable periods of time, for the settlement of securities of the Mexican market. A linear programming model for the netting and clearing of operations was used. The performance of the new SSS was evaluated by performing experiments using a deterministic simulation model under different opera...
14
artículo
Publicado 2015
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The warm of the tropical pacific ocean generate the El Niño phenomenon. The Peru between the years 1997 and 1998 took big materials losses and human victims because the presence of EL NIÑO.Now the scientists try to make a prediction of the magnitude of natural phenomenon using different methods of simulation. Our objective are study the changes in the weather variables such that:temperature, wind fields and relative humidity, from October to November in 2015 and compared with years 1997 and 1998. We used the BRAMS (Brazilian Regional Atmospheric Modelling System) model; with this model We could analyze the differences of temporal and spatial changes for the weather variables. The variation of temperature in northern Peru was around 18 and 29 degreesCelsius , relative humidity was around 35 and 100% of the coast, the wind fields were 2.7 km/h to 9.9 km/h . The Temperature at regions of ...
15
artículo
Publicado 2015
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The warm of the tropical pacific ocean generate the El Niño phenomenon. The Peru between the years 1997 and 1998 took big materials losses and human victims because the presence of EL NIÑO.Now the scientists try to make a prediction of the magnitude of natural phenomenon using different methods of simulation. Our objective are study the changes in the weather variables such that:temperature, wind fields and relative humidity, from October to November in 2015 and compared with years 1997 and 1998. We used the BRAMS (Brazilian Regional Atmospheric Modelling System) model; with this model We could analyze the differences of temporal and spatial changes for the weather variables. The variation of temperature in northern Peru was around 18 and 29 degreesCelsius , relative humidity was around 35 and 100% of the coast, the wind fields were 2.7 km/h to 9.9 km/h . The Temperature at regions of ...
16
artículo
Publicado 2014
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This research aims to develop a simulation model, for the operation of hydraulic and hydrological system of the Rima-Santa Eulalia River basin that includes the H. P. Huanza project now in construction, with purposes of power generation, water supply for agricultural use and drink water for population of Lima and Callao. The hydraulic system is formed by hydroelectric EDEGEL S.A. that operate using the regulated and unregulated flow of the Santa Eulalia river basin, Rímac river basin, Marcapomacocha Lake watershed and flows into the tunnel Trasandino infiltrators. We evaluated the operation of the project H. P. Huanza located upstream Sheque reservoir, in order to not affect the operation of H. P. Huinco EDEGEL property. The results obtained from the simulation model are acceptable for guaranteeing an average flow rate of 12.51 m3/s to be used by the H. P. Huinco and we can count on 95 ...
17
artículo
Publicado 2011
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We study a system formed by M dimers through half-filled two-site Hubbard model, with two electrons. Our approach use the third version of Nonextensive Statistical Mechanics as tool for calculating thermodynamic and magnetic parameters such as entropy, internal energy, magnetization and specific heat. In the computer simulations, we vary the q entropic index values between 1 and 2, such that, q = 1.0, 1.4, 1.7 and 2.0. These values are interesting to study small magnetic systems. We find the critical temperature regions in simulations with the simple Hubbard model, i.e. without the intersite interaction. For other side, adding this additional term, we notice an enlargement and shifting of the thermodynamic parameters comparing with the obtained from simple Hubbard model; even more, we found in some cases the absence of the critical temperature regions.
18
objeto de conferencia
We present the simulation of the application of the Model-based Predictive Control (MPC) of the drum level in a Combined Cycle Plant in order to minimize the time for reaching the highest capacity of plant, around 225 MW. In contrast to others control techniques, our simulation yields that the MPC has shown capabilities as to reach its expected power in about 40 minutes before than PID, time which normally takes the whole industrial process under this control. In the present study, we have tested up to three different reference functions in order to compare performance during the drum level control. According to the simulations, the MPC working together with these reference functions is seen to be promising in the sense of providing efficiency to the plant from the startup until the time when system is reaching 225 MW. We have also calculated a minor discrepancy of order of lees than 5%.
19
artículo
Publicado 2002
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The quasi homogeneous diffusion model is used to simulate the ion exchange kinetics in batch systems. The theoretical equation predicts that rate exchange is controlled by the ratio weight of the ion exchanger to volume of solution and the resistances to mass transfer in the particle and in the liquid.
20
artículo
Publicado 2002
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The quasi homogeneous diffusion model is used to simulate the ion exchange kinetics in batch systems. The theoretical equation predicts that rate exchange is controlled by the ratio weight of the ion exchanger to volume of solution and the resistances to mass transfer in the particle and in the liquid.
