论文信息 - Measurement of oil volume fraction and velocity distributions in vertical oil-in-water flows using ERT and a local probe

Measurement of oil volume fraction and velocity distributions in vertical oil-in-water flows using ERT and a local probe

This paper presents the use of a high performance dual-plane electrical resistance tomography (ERT) system and a local dual-sensor conductance probe to measure the vertical upward oil-in-water pipe flows in which the mean oil volume fraction is up to 23.1%. A sensitivity coefficient back-projection (SBP) algorithm was adopted to reconstruct the flow distributions and a cross correlation method was applied to obtain the oil velocity distributions. The oil volume fraction and velocity distributions obtained from both measurement techniques were compared and good agreement was found, which indicates that the ERT technique can be used to measure the low fraction oil-water flows. Finally, the factors affecting measurement precision were discussed.

[1] Wuliang Yin,et al. A highly adaptive electrical impedance sensing system for flow measurement , 2002 .

[2] D. Weaver,et al. A quantitative structure-activity relationship study for α-substituted acetamido-N-benzylacetamide derivatives - A novel anticonvulsant drug class , 2005 .

[3] Mi Wang,et al. A high performance online data processing EIT system , 2003 .

[4] Mi Wang,et al. ELECTRICAL RESISTANCE TOMOGRAPHIC SENSING SYSTEMS FOR INDUSTRIAL APPLICATIONS , 1999 .

[5] Rakesh Mishra,et al. Power law approximations to gas volume fraction and velocity profiles in low void fraction vertical gas–liquid flows , 2004 .

[6] J. Maxwell. A Treatise on Electricity and Magnetism , 1873, Nature.

[7] F. J. Dickin,et al. Determination of composition and motion of multicomponent mixtures in process vessels using electrical impedance tomography-I. Principles and process engineering applications , 1993 .