The propagation and attenuation of pressure waves in highly dispersed gas–liquid flows are investigated in this work, and an indirect measurement method is proposed to assess the attenuation coefficient in short pipelines. Additionally, a mechanistic acoustic energy dissipation model is derived from the oscillatory solutions of one-dimensional (1D) nondimensionalized mass and momentum equations to facilitate the interpretation of the results. Tests were performed on a 1500 m long, 50 mm internal diameter pipeline in which pressure disturbances were induced by suddenly opening leak valves. The results are consistent and in good agreement with the proposed attenuation model (±10% for 103 < Re < 104), therefore validating the proposed model and indirect measurement method.
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January 2017
Research-Article
Propagation and Attenuation of Pressure Waves in Dispersed Two-Phase Flows
Jaqueline Costa Martins,
Jaqueline Costa Martins
São Carlos School of Engineering,
University of São Paulo,
Avenida Trabalhador Sãocarlense, 400,
São Carlos, SP 13566-590, Brazil
e-mail: jaquelinebft@yahoo.com.br
University of São Paulo,
Avenida Trabalhador Sãocarlense, 400,
São Carlos, SP 13566-590, Brazil
e-mail: jaquelinebft@yahoo.com.br
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Paulo Seleghim, Jr.
Paulo Seleghim, Jr.
São Carlos School of Engineering,
University of São Paulo,
Avenida Trabalhador Sãocarlense, 400,
São Carlos, SP 13566-590, Brazil
e-mail: seleghim@sc.usp.br
University of São Paulo,
Avenida Trabalhador Sãocarlense, 400,
São Carlos, SP 13566-590, Brazil
e-mail: seleghim@sc.usp.br
Search for other works by this author on:
Jaqueline Costa Martins
São Carlos School of Engineering,
University of São Paulo,
Avenida Trabalhador Sãocarlense, 400,
São Carlos, SP 13566-590, Brazil
e-mail: jaquelinebft@yahoo.com.br
University of São Paulo,
Avenida Trabalhador Sãocarlense, 400,
São Carlos, SP 13566-590, Brazil
e-mail: jaquelinebft@yahoo.com.br
Paulo Seleghim, Jr.
São Carlos School of Engineering,
University of São Paulo,
Avenida Trabalhador Sãocarlense, 400,
São Carlos, SP 13566-590, Brazil
e-mail: seleghim@sc.usp.br
University of São Paulo,
Avenida Trabalhador Sãocarlense, 400,
São Carlos, SP 13566-590, Brazil
e-mail: seleghim@sc.usp.br
Contributed by the Fluids Engineering Division of ASME for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received December 8, 2015; final manuscript received July 21, 2016; published online October 18, 2016. Assoc. Editor: Mark R. Duignan.
J. Fluids Eng. Jan 2017, 139(1): 011304 (13 pages)
Published Online: October 18, 2016
Article history
Received:
December 8, 2015
Revised:
July 21, 2016
Citation
Costa Martins, J., and Seleghim, P., Jr. (October 18, 2016). "Propagation and Attenuation of Pressure Waves in Dispersed Two-Phase Flows." ASME. J. Fluids Eng. January 2017; 139(1): 011304. https://doi.org/10.1115/1.4034370
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