System board to measures of gas-liquid two-phase flow / Sistema embarcado para medidas de escoamento bifasico gas-liquido

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

Two-phase flow gas-liquid are commonly found in nature and in various industrial activities. In this type of flow, the phases present can escape arranged in different spatial configurations in the duct, called regimes or flow patterns, the determination is critical for the design of two-phase flow systems. In this study, an indication of the flow pattern is achieved from the measurement of gas fraction microcontrolled using an instrument composed of a transducer and signal conditioner. A system of pattern recognition consists of different modules, which consist of: acquiring the signal, extracting relevant information from the signal, and finally the classification itself. Statistical functions of mean and standard deviation are applied to extract the relevant information from the signal, for computacional purposes. In the classification stage, a set of rules using techniques of expert systems is used by the performance of this type of classification and also little need computing. Thus, with the addition of the statistical functions of mean and standard deviation and a set of rules with expert systems is developed in this work a system of pattern recognition of two-phase flow gas-liquid loaded into an microcontrolled instrument for measuring gas fraction

ASSUNTO(S)

two-phase flow gas - escoamento flow of gas escoamento bifasico

ACESSO AO ARTIGO

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