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Browsing by Subject "Mathematical model"

Now showing items 1-20 of 64

A quasi-steady state mathematical model of an integrated ground source heat pump for building space control

Corberán Salvador, José Miguel; Finn, D.P.; Montagud Montalvá, Carla Isabel; Murphy, F.T.; Edwards, K.C. (Elsevier, 2011-01)

[EN] This paper is concerned with the development of a mathematical model, capable of describing the quasisteady state performance of an integrated ground source heat pump, which is used for heating and cooling of an ...
A two-stage growth model for gilthead sea bream (Sparus aurata) based on the thermal growth coefficient

Mayer, Pablo; Estruch Fuster, Vicente Domingo; Jover Cerdá, Miguel (Elsevier, 2012-08-15)

Several authors have proposed models to describe fish growth taking the influence of temperature into account, and one of the most interesting is the "thermal unit growth coefficient" (TGC). Recent research has demonstrated ...
A zonal approach for estimating pressure ratio at compressor extreme off-design conditions

Galindo, José; Navarro, Roberto; García-Cuevas González, Luis Miguel; Tarí, Daniel; Tartoussi, H.; Guilain, S. (SAGE Publications, 2019-04)

[EN] Zero-dimensional/one-dimensional computational fluid dynamics codes are used to simulate the performance of complete internal combustion engines. In such codes, the operation of a turbocharger compressor is usually ...
Analysing the Spanish smoke-free legislation of 2006: A new method to quantify its impact using a dynamic model

Guerrero Cortina, Francisco; Santonja, Francisco-José; Villanueva Micó, Rafael Jacinto (Elsevier, 2011-07)

Background: There are many models that study aspects of smoking habits: the influence of price, tax, relapse time, and the effects of prohibition. There are also studies examining the effects of the Spanish smoke-free law. ...
Analysis of hydraulic transients during pipeline filling processes with air valves in large-scale installations

Romero, Guillermo; Fuertes-Miquel, Vicente S.; Coronado-Hernández, Óscar E.; Ponz-Carcelén, Román; Biel-Sanchis, Francisco (Taylor & Francis, 2020-08-04)

[EN] During the filling process in pressurized hydraulic systems, sudden pressure changes generated inside the pipes can cause significant damage. To avoid these excessive overpressures, air valves should be installed to ...
Análisis y propuesta de soluciones para la red de saneamiento de la pedanía Horno de Alcedo (Valencia)

Fuentes Cebolla, Jordi (Universitat Politècnica de València, 2017-10-16)

This Master thesis aims to model, to analyze the running and to make recommendation for the improvement of the wastewater network of Horno de Alcedo, a town belonging to the district of Poblados del Sur, Valencia. The town ...
Análisis de los transitorios hidráulicos generados durante los procesos de llenado y vaciado en instalaciones reales

Romero García-Consuegra, Guillermo (Universitat Politècnica de València, 2020-07-09)

[ES] Al realizar maniobras de llenado y de vaciado en los sistemas hidráulicos a presión, se generan en el interior de las tuberías unos cambios bruscos de presión que pueden provocar importantes daños. Para evitar alcanzar ...
Análisis de sensibilidad de la caracterización del agua y de los principales parámetros del modelo en el tratamiento de agua residual urbana mediante un biorreactor anaerobio de membranas

Navarrete Montoya, Christian Camilo (Universitat Politècnica de València, 2016-07-20)

[EN] The amount of water available on the planet has decreased significantly forcing society to institute new ideologies on demand, consumption, use and reuse of water. These new ideologies must be accompanied in turn the ...
Análisis del abastecimiento de agua potable de sagunto. Modelo matemático y propuesta de mejoras

Lozano López, Juan Ismael (Universitat Politècnica de València, 2015-06-05)

[EN] This document analyze the operation of drinking water supply infrastructure of Sagunto, in order to detect anomalies and look for solutions that improve the proper functioning of both downtown Sagunto, the Port of ...
Análisis y proyecto de sectorización de la red de abastecimiento de agua potable de las urbanizaciones del Plantío y la Cañada. Sector Sur

Fabra Arbona, Laura (Universitat Politècnica de València, 2016-09-07)

[EN] The main purpose of this paper is an analysis of the current operation of the drinking water network, making a characterization of existing problems and subsequent proposal of feasible improvements. To do this, a ...
Análisis y simulación del régimen hídrico en humedales costeros

Ferrando Fe-Castell, José Francisco (Universitat Politècnica de València, 2015-06-15)

[EN] The conflict between the use of groundwater and surface water and wetland conservation is particularly relevant where the level of these natural ecosystems has descended considerably in recent decades , and there is ...
APLICACIÓN DE MODELOS MATEMÁTICOS PARA LA EVALUACIÓN DE LA PRODUCCIÓN DE LIXIVIADOS DE VERTEDEROS DE RESIDUOS SÓLIDOS URBANOS: ANÁLISIS COMPARADO DEL MODELO DE BALANCE HÍDRICO Y DEL MODELO VHELP

Carnero Pousa, María Luisa (Universitat Politècnica de València, 2019-07-26)

[ES] La eliminación de residuos mediante vertedero genera lixiviados y biogás, dos subproductos dañinos para el medio ambiente, cuyo tratamiento puede suponer un gran coste económico tanto en periodo de funcionamiento de ...
Artificial Pancreas System With Unannounced Meals Based on a Disturbance Observer and Feedforward Compensation

Sanz Diaz, Ricardo; García Gil, Pedro José; Diez, José-Luís; Bondía Company, Jorge (Institute of Electrical and Electronics Engineers, 2021-01)

[EN] This brief is focused on the closed-loop control of postprandial glucose levels of patients with type 1 diabetes mellitus after unannounced meals, which is still a major challenge toward a fully autonomous artificial ...
BIOLEACH: un modelo matemático para la evaluación conjunta de la producción de lixiviados y biogás en vertederos de RSU

Rodrigo Clavero, María Elena (Universitat Politècnica de València, 2016-11-29)

[EN] Leachate and biogas production are two critical issues both on the operational and post-clausure phase of solid waste landfills. Leachate is formed by the percolation of the fluid that enters the landfill from external ...
Characterization and Modeling of Atrioventricular Conduction during Atrial Fibrillation

Martínez Climent, Batiste Andreu (Universitat Politècnica de València, 2011-06-03)

La fibrilación auricular (FA) es una de las arritmias cardiacas más comunes, la cual afecta alrededor del 10% de la población de más de 70 años. En FA, los impulsos eléctricos auriculares generados por el nodo sinusal son ...
Cinética de secado de tomillo

da Rocha, Ronicely P.; Melo, Evandro de C.; Bon Corbín, José; Berbert, Pedro A.; Donzeles, Sérgio M. L.; Tabar, Jon A. (Departamento de Engenharia Agrícola - UFCG, 2012)

[EN] This work aimed to study the drying kinetics of thyme and subsequent adjustment of different mathematical models to the experimental data and to determine the effective diffusivity and the activation energy. In order ...
Comparison between the finite differences, finite volume and finite element methods for the modelling of convective drying of fruit slices

Castro, Adriana; Mayorga, Edgar; Moreno, Fabian (Editorial Universitat Politècnica de València, 2018-09-07)

[EN] Three numerical methods, finite differences, finite volume and finite element, were compared to know their convenience in the simulation of convective drying of fruit slices. The mathematical treatment, the stability, ...
Complexity-preserving simulations among three variants of accepting networks of evolutionary processors

Bottoni ., Paolo; Labella ., Anna; Manea ., Florin; Mitrana, Víctor; Petre ., Ion; Sempere Luna, José María (Springer Verlag (Germany), 2011-03)

In this paper we consider three variants of accepting networks of evolutionary processors. It is known that two of them are equivalent to Turing machines. We propose here a direct simulation of one device by the other. ...
Contraste numérico-experimental de un modelo matemático que simula el movimiento del flujo en condiciones de aguas someras incluyendo las pérdidas de energía

Balaguer-Beser, A.; Rodríguez-Benlloch, F. J.; Nácher-Rodríguez, B.; Vallés-Morán, F. J. (Universitat Politècnica de València, 2017-08-01)

[EN] In this paper, a comparison between the results obtained in laboratory experiments and those calculated by anumerical simulation of shallow water equations in an open channel is performed, ...
Control Robusto de Orden Fraccionario de la Presión del Vapor en el Domo Superior de una Caldera Bagacera

Rivas Pérez, R.; Castillo García, F.; Sotomayor Moriano, J.; Feliu Batlle, V. (Elsevier, 2014-01-12)

[EN] This paper presents a fractional order controller of the class IDα-1 for robust control of the steam pressure in the steam drum of a bagasse boiler. The proposed controller improves the effectiveness on the control, ...