Non Intrusive Technique
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Statistical characterization of two-phase slug flow in a horizontal pipe
The present paper reports the results of an ongoing project aimed at providing statistical information on slugs in two-phase flow in a horizontal pipe. To this end, the flow was examined experimentally and numerically. On the experimental side, three non-intrusive optical techniques were combined and employed to determine the velocity field and bubble shape:
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2011
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2. Contribution to the study of a non-invasive probe for measuring the water thickness in a core-annular flow / Contribuição ao estudo de um medidor não-invasivo da espessura da camada de agua em um escoamento anular oleo-agua
This work is a contribution to the study of a non-intrusive probe for measurement of the thickness of the water layer of a core-annular flow. A capacitive probe was built and its static performance was evaluated from tests executed in a specially designed bench-scale apparatus. In addition, evaluation of the dynamic performance was made possible from fluid-f
Publicado em: 2010
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3. Modelo I2P : recomendação de recursos baseando-se em preferências, interesses e popularidade
The development of technologies that assist in the teach-learning process is an rgued subject in some areas of knowledge. The great diffusion of Web-based Educational Systems (WbE-S) has been shown the popularization of distance learning and its support tools. The Tidia-Ae project, support by FAPESP, aim at the development of a WbE-S that can use the concept
Publicado em: 2008
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4. Investigação Experimental da Adição de Energia por Laser em Escoamento Hipersônico de Baixa Densidade
The possibility of reducing the aerodynamic drag and heating of a hypersonic vehicle by addition energy to the air ahead of it is an attractive idea directed toward the hypersonic field. (Mach>5) and can be realized by laser induced plasma generation. In this context, this work presents original results in the experimental investigation of the energy addi
Publicado em: 2008
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5. DEVELOPMENT OF TECHNIQUE BASED ON FLUORESCENCE TO MEASURE TWOPHASE SLUG FLOW / DESENVOLVIMENTO DE TÉCNICA BASEADA EM FLUORESCÊNCIA PARA MEDIÇÃO DE ESCOAMENTO BIFÁSICO EM REGIME DE GOLFADA
This work presents the implementation of a non-intrusive optical technique for measuring the hydrodynamic characteristics of liquid- gas, two-phase flows. The work was limited to the study of air-water slug flows. The technique implemented, already described in the literature, combines Particle Image Velocimetry - PIV, Laser Induced Fluorescence - LIF, and p
Publicado em: 2007
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6. Estudo prospectivo de sonda capacitiva não intrusiva duplo-sensor para medir fração volumétrica in situ em escoamentos contendo água, óleo e ar / Prospective study of a non-intrusive double-sensor capacitive probe for in-situ volumetric fraction measurements in oil-water-air flows
Sensores capacitivos são amplamente utilizados em vários sistemas de medida, tanto na indústria como em laboratórios de pesquisa. Estes dispositivos medem variadas grandezas físicas, como deslocamento, força, pressão, densidade e concentração de substâncias em escoamentos bifásicos, entre outros. Sua aplicação vêm sendo utilizada há algum temp
Publicado em: 2006
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7. Medições de temperaturas de chamas de etanol utilizando fluorescência induzida por laser / Temperature Measurements in Ethanol Flames Using Laser Induced Fluorescence
Conventional methods for the study of combustion are usually intrusive methods (for example, the use of thermocouples to measure flame temperatures), which might disturb the burning process (thermal, catalytic or aerodynamic effects). The diagnostics techniques using lasers, in addition to being non-intrusive, have high temporal and spatial resolution. They
Publicado em: 2005
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8. Influencia do teor de O2 e da velocidade do ar na formação da fuligem em chamas difusas de acetileno com escoamento anular paralelo do oxidante
Soot formation in industrial combustion systems constitutes an important theme of engineering interest. The presence of soot in the flame increases the heat transfer from the combustion gases by thermal radiation, but may constitute an environmental problem when emitted in the atmosphere. This work evaluates the influence ofthe oxygen index and air velocity
Publicado em: 2001
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9. Monitoring Granulation Rate Processes Using Three PAT Tools in a Pilot-Scale Fluidized Bed
The purpose of this research was to analyze and compare the responses of three Process Analytical Technology (PAT) techniques applied simultaneously to monitor a pilot-scale fluidized bed granulation process. Real-time measurements using focused beam reflectance measurement (Lasentec FBRM) and near-infra red spectroscopy (Bruker NIR) were taken by inserting
Springer US.