Propagation and Attenuation of Pressure Waves in Dispersed Two-Phase Flows

Autor(es)

Martins, Jaqueline Costa ; Seleghim, Jr., Paulo

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME; v. 139, n. 1 JAN 2017.
• Citações Web of Science: 2

Resumo

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 1500m long, 50mm 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 10(3) < Re< 10(4)), therefore validating the proposed model and indirect measurement method. (AU)

• Processo FAPESP: 03/13819-6 - Instrumentacao e controle de escoamentos multifasicos industriais.
• Beneficiário: Paulo Seleghim Júnior
• Modalidade de apoio: Auxílio à Pesquisa - Regular