Simulation E Modeling
Mostrando 13-24 de 462 artigos, teses e dissertações.
-
13. Modeling of slab-on-grade heat transfer in EnergyPlus simulation program
Resumo O fluxo de calor entre o piso e o solo de uma edificação térrea é um dos aspectos mais influentes em seu desempenho térmico e energético. No entanto, há ainda um grande número de incertezas e poucos estudos nessa área. Neste trabalho comparam-se diferentes alternativas de modelagem nos programas EnergyPlus (8.5.0) e Slab (.75) dos parâmetros
Ambient. constr.. Publicado em: 2017-07
-
14. A high-level dynamic analysis approach for studying global process plant availability and production time in the early stages of mining projects
Abstract In the early stage of front-end studies of a Mining Project, the global availability (i.e. number of hours a plant is available for production) and production (number of hours a plant is actually operated with material) time of the process plant are normally assumed based on the experience of the study team. Understanding and defining the availabili
REM, Int. Eng. J.. Publicado em: 2017-06
-
15. ONE- AND TWO-DIMENSIONAL ECOHYDRAULIC MODELING OF FORMOSO RIVER (MG)
ABSTRACT The objective of this study was to compare ecohydrological simulations from a one-dimensional model (PHABSIM - Physical Habitat Simulation System) and a two-dimensional model (River2D) in order to indicate a reliable tool that could be used to determine public policies for the sustainable management of the water resources of the FormosoRiver basin(M
Eng. Agríc.. Publicado em: 2016-12
-
16. MODELING AND SIMULATION OF THE PROCESS OF DEHYDRATION OF BIOETHANOL TO ETHYLENE
Abstract The use of carbon-based waste biomass in the production of plastics can partially meet the growing demand for plastics in the near future. An interest in the production of ethylene from bioethanol has been renewing, motivated mainly by environmental appeal and economics. The main objective of this work is the development of a mathematical model for
Braz. J. Chem. Eng.. Publicado em: 2016-09
-
17. Self-Organization in Ionic Liquids: From Bulk to Interfaces and Films
In this contribution we present an overview on the relation between the complex structure of ionic liquids (ILs) and its impact in the field of surface science. The results herein described result mainly from modeling and simulation work carried out at Centro de Química Estrutural, Universidade de Lisboa, complemented in some cases by experimental results o
J. Braz. Chem. Soc.. Publicado em: 2016-02
-
18. Models of protein and amino acid requirements for cattle
Protein supply and requirements by ruminants have been studied for more than a century. These studies led to the accumulation of lots of scientific information about digestion and metabolism of protein by ruminants as well as the characterization of the dietary protein in order to maximize animal performance. During the 1980s and 1990s, when computers became
R. Bras. Zootec.. Publicado em: 2015-03
-
19. MÉTODO ALTERNATIVO PARA A SÍNTESE E MECANISMO DE 2-(1,3-DITIANO-2-ILIDENO)-ACETONITRILA
We report an alternative method for the synthesis of 2-(1,3-dithian-2-ylidene)-acetonitrile using 3-(4-chlorophenyl)-3-oxopropanenitrile and carbon disulfide as starting materials. The methanolysis of the intermediate 3-(4-chlorophenyl)-2-(1,3-dithian-2-ylidene)-3-oxopropanenitrile occurs via three possible intermediates, leading to the formation of the prod
Quím. Nova. Publicado em: 2015-02
-
20. Mathematical modeling of a convective textile drying process
This study aims to develop a model that accurately represents the convective drying process of textile materials. The mathematical modeling was developed from energy and mass balances and, for the solution of the mathematical model, the technique of finite differences, in Cartesian coordinates, was used. It transforms the system of partial differential equat
Braz. J. Chem. Eng.. Publicado em: 2014-12
-
21. Multi-model MPC with output feedback
In this work, a new formulation is presented for the model predictive control (MPC) of a process system that is represented by a finite set of models, each one corresponding to a different operating point. The general case is considered of systems with stable and integrating outputs in closed-loop with output feedback. For this purpose, the controller is bas
Braz. J. Chem. Eng.. Publicado em: 2014-03
-
22. Biosorption study of Ni2+ and Cr3+ by Sargassum filipendula: kinetics and equilibrium
In this work, the biosorption of Cr3+ and Ni2+ by Sargassum filipendula pre-treated with CaCl2 was studied. Kinetic and equilibrium experiments were carried out for mono- and multi-component solutions in a batch reactor at pH 3.0 and 30 ºC. The results from the kinetic experiments showed that Cr3+ adsorbs slower than Ni2+. This behavior was explained by mea
Braz. J. Chem. Eng.. Publicado em: 2014-03
-
23. Modelagem numérica de escavações de túneis em maciços evaporíticos / Numerical modeling of tunnel excavation in solid evaporite
A precaução com a ruína em um material geológico submetido a altas tensões é um problema bastante comum na Geotecnia. Em um túnel, por exemplo, durante a escavação, é possível gerar uma perda de equilíbrio que pode levar à ruptura, fechamento e perda do mesmo. Quando a perfuração é feita em um maciço com características de deformabilidade d
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/09/2012
-
24. Modelagem matemática e simulação numérica do transporte de metano em reservatórios de hidrelétricas / Mathematical modeling and numerical simulation of the methane transport in hydroelectric reservoirs
É notório que a degradação ambiental vem ao longo do tempo posicionando-se como um dos principais problemas do mundo moderno. Dentre as várias questões do interesse ambiental podemos destacar a ascensão da bolha de metano, em reservatórios hidrelétricos, desde o sedimento anóxico no fundo do reservatório até a interface água atmosfera. Neste con
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 05/09/2012