Pipe Lines
Mostrando 1-11 de 11 artigos, teses e dissertações.
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1. Estudo experimental de escoamentos líquido-gás intermitentes em tubulações inclinadas / Experimental analysis of slug flow in inclined lines
This work analyses experimentally the flow properties of a gas-liquid mixture flowing in the slug regime in inclined lines. The experimental data are collected through a pair of impedance probes placed at 77D and 257D downstream of the air-water mixer in a 26mm ID pipe. During the tests air and water superficial velocities spanned, respectively, from 0,1 m/s
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/02/2010
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2. Modificação do LLDPE através de silanos viabilizando a aplicação em camadas plásticas de linhas flexíveis / Study of silane grafting reactions of low density polyethylene for pipe applications
The flexible lines are flexible structures manufactured through plastic and steel layers that allows its use in order to permit fluid flow in exploration and production of hydrocarbon between offshore oil units and sea bed and/or coast. Nowadays these pipes are one of the main ways to permit the exploration of hydrocarbon in deepwater. The present study aims
Publicado em: 2009
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3. Compósitos cerâmicos porosos de alumina - zircônia para aplicação em sistemas de controle térmico para satélites: obtenção e caracterização / Alumina-zirconia porous ceramic composites for application in satellite thermal control systems: obtaining and characterization
To control the temperature of satellites are used various thermal control heat systems. The Loop Heat pipe (LHP) are being developed at the DEM (Space Mechanic and Control Division) of the INPE (National Institute for Space Research) an apparatus for passive heat control of the satellites components. The main components of the LHP system are: capillary evapo
Publicado em: 2008
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4. MODELAGEM TRANSIENTE DA TRANSFERÊNCIA DE CALOR EM DUTOS DE PETRÓLEO OU GÁS, TERMICAMENTE ISOLADOS / TRANSIENT HEAT TRANSFER MODELING OF THERMALLY INSULATED OIL OR GAS PIPELINES
Subsea pipelines are employed not only for production but also for transportation. In both situations, warm oil loses heat to the cold sea water. The heat loss to the ambient is controlled by means of thermal insulation, which is designed for steady state operations. During shutdowns, the stagnant fluid in the pipeline loses heat to the cold surrounding, eve
Publicado em: 2005
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5. Escoamento trifasico vertical vertical de oleos pesados aplicado a elevação artificial / Theree-phase flow of heavy oil for application to artificial lift
The oil companies, by their Exploration and Production departments (E&P), have worldwide sought viable means of recovery and prQduction of heavy oil fields, so as to aggregate and delimit those reserves in order to provide the highest revenues. In this search, the role of elevation and flow is to supply an adequate transport for these oils through lines and
Publicado em: 2004
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6. Modeling of the Fluid-Structure Interaction in Inelastic Piping Systems
In many engineering applications, compliant piping systems conveying liquids are subjected to inelastic deformations due to severe pressure surges such as plastic tubes in modern water supply transmission lines and metallic pipings in nuclear power plants. In these cases the design of such systems may require an adequate modeling of the interactions between
Journal of the Brazilian Society of Mechanical Sciences. Publicado em: 2002-03
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7. Dois testes de imageamento com GPR em problemas de controle ambiental em regiões tropicais: migração de dunas e localização de dutos de óleo enterrados
Because the penetration depth of Ground Penetrating Radar (GPR) signals is very limited in high conductive soils, the usefullness of this method in tropical regions is not yet completly known. The main objective of this researh is to test the usefullness of the method in Brazil. Two typical problems where GPR has been used in Europe and North American were c
Publicado em: 2001
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8. A NUMERICAL AND EXPERIMENTAL STUDY TO EVALUATE PIPE-SOIL INTERACTION / UM ESTUDO NUMÉRICO E EXPERIMENTAL PARA A AVALIAÇÃO DA INTERAÇÃO SOLO - DUTO
The necessity for offshore oil exploration to reach greater depths, pushed the demands for semi-submersible exploration and production units. Presently, steel catenary risers (SCR) appear to be the best recommended technical solution for oil and gas exploration.Concerning to the fatigue analysis there are two critical stress points to be considered: close to
Publicado em: 2001
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9. Head loss.set by heterogeneous average in conduits horizontal / Perda de carga provocada por escoamento heterogeneo em condutos horizontais
The head loss of solid-liquid draining mixtures in horizontal forced conduits in the heterogeneous regimen, can be calculated by knowing a parameter «I» of adimensional sediment carrier. This adimensional depends on the draining average speed, on the relative density and the solid grain size, on the conduit diameter, and on experimentally determined consta
Publicado em: 2001
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10. Estudo hidraulico de linhas laterais de irrigação localizada
In order to avaluate the performance of Hazen-Williams, Flamant and Universal s equations, associated to Christiansen and distribution on the march s (1/m+1 and 1/3) coefficients in the head loss calculate in lateral lines of localized irrigation, this study was made in the Limeira campus of UNICAMP. Laterallines of localized irrigation was utilized for mini
Publicado em: 1993
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11. The Rice PIPELINE: a unification tool for plant functional genomics
The Rice Genome Research Project in Japan performs genome sequencing and comprehensive expression profiling, constructs genetic and physical maps, collects full-length cDNAs and generates mutant lines, all aimed at improving the breeding of the rice plant as a food source. The National Institute of Agrobiological Sciences in Tsukuba, Japan, has accumulated n
Oxford University Press.