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

被引：4

作者：

Martins, Jaqueline Costa ^{[1
]}

Seleghim, Paulo, Jr. ^{[1
]}

机构：

[1] Univ Sao Paulo, Sao Carlos Sch Engn, Ave Trabalhador Saocarlense 400, BR-13566590 Sao Carlos, SP, Brazil

来源：

JOURNAL OF FLUIDS ENGINEERING-TRANSACTIONS OF THE ASME | 2017年 / 139卷 / 01期

基金：

巴西圣保罗研究基金会;

关键词：

PIPE SYSTEM DIAGNOSIS; UNSTEADY-STATE TESTS; LEAK DETECTION; COEFFICIENT; TRANSIENTS;

D O I：

10.1115/1.4034370

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

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.

引用

页数：13

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