Use este identificador para citar ou linkar para este item: http://carpedien.ien.gov.br:8080/handle/ien/2464
Tipo: conferenceObject
Título: High speed ultrasonic system to measure bubbles velocities in a horizontal two-phase flow
Autor(es): Cunha Filho, Jurandyr S.
Farias, Marcos Santana
Faccini, José Luiz Horácio
Lamy, Carlos Alfredo
Su, Jian
Resumo: In this work, a non invasive technique consisting of a high speed ultrasonic multitransducer pulse-echo system was developed to characterize gas-liquid two-phase flow parameters that are important in the study of the primary refrigeration circuit of nuclear reactors. The high speed ultrasonic system consists of two transducers (10 MHz/φ 6.35 mm), a generator/multiplexer board, and software that selects and has a data acquisition system of the ultrasonic signals. The resolutions of the system and the pulse time generated from each transducer are, respectively, 10 ns and 1.06 ms. The system initially was used in the local instantaneous measurement of gas-liquid interface in a circular horizontal pipe test section made of a 5 m long stainless steel pipe of 51.2 mm inner diameter, where the elongated bubbles velocity was measured (Taylor bubbles). The results show that the high speed ultrasonic pulse-echo system provides good results for the determination of elongated bubbles velocities.
Palavras-chave: Sistema ultrassônico de alta velocidade
Bolhas
Reatores nucleares
Idioma: por
País: Brasil
Editor: Instituto de Engenharia Nuclear
Sigla da Instituição: IEN
Tipo de Acesso: openAccess
URI: http://carpedien.ien.gov.br:8080/handle/ien/2464
Data do documento: Set-2009
Aparece nas coleções:Desenvolvimento de Tecnologia para Sistemas Complexos - Trabalhos de Congresso

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