Document - Measurement of liquid film distribution in near-horizontal pipes with an array of wire probes

2016

Journal article Open Access

Measurement of liquid film distribution in near-horizontal pipes with an array of wire probes

Andreussi P., Pitton E., Ciandri P., Picciaia D., Vignali A., Margarone M., Scozzari A.

Modeling and Simulation Electrical and Electronic Engineering Conductance probes Film flow rate Multiphase flow Computer Science Applications Instrumentation Film thickness Stratified flow

A test section consisting of a circumferential array of conductance probes has been developed to measure the thickness distribution around the pipe wall of a liquid layer flowing in near horizontal pipes. When the film thickness is known, the array can be employed to measure the local film flow rate by injecting a high conductivity tracer into the liquid flowing at pipe wall.The test section consists of a short pipe made of a non-conducting material installed in a flow rig designed to operate at an appreciable pressure (40 bar). The flow loop is made of metallic pipes connected to the electrical earth. The conductance probes are made of three parallel, rigid wires spaced along the flow direction and are used to measure the height or the electrical conductivity of the liquid layer. The three-electrode geometry is aimed at minimizing current losses toward earth. The simultaneous operation of all the probes of the array, without multiplexing, allows a substantial reduction of current dispersion and a good circumferential resolution of film thickness or conductivity measurements. The probe geometry may generate an appreciable disturbance to the gas-liquid interface. This aspect of the proposed method has been studied with an experimental and numerical investigation relative to free falling liquid layers.

Source: Flow measurement and instrumentation 47 (2016): 71–82. doi:10.1016/j.flowmeasinst.2015.12.007

Publisher: Butterworths., Guilford, Regno Unito

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@article{oai:it.cnr:prodotti:346538,
	title = {Measurement of liquid film distribution in near-horizontal pipes with an array of wire probes},
	author = {Andreussi P. and Pitton E. and Ciandri P. and Picciaia D. and Vignali A. and Margarone M. and Scozzari A.},
	publisher = {Butterworths., Guilford, Regno Unito},
	doi = {10.1016/j.flowmeasinst.2015.12.007},
	journal = {Flow measurement and instrumentation},
	volume = {47},
	pages = {71–82},
	year = {2016}
}