What is it about?
Severalmethodsarecomparedforthedetectionofmovingcapillaryfrontsinspontaneousimbibitionexperimentswherewaterinvadesdryporousrock.Thesemethodsare:(i)thecontinuousmonitoringofthemassincreaseduringimbibition,(ii)theimagingofthewaterfrontmotionusingX-rayCTscanning,(iii)theuseofultrasonicmeasurementsallowingthedetectionofvelocity,amplitudeandspectralcontentofthepropagatingelasticwaves,and(iv)thecombineduseofX-rayCTscanningandultrasonicmonitoring.Itisshownthatthepropertiesofcapillaryfrontsdependontheheterogeneityoftherocks,andthattheinformationderivedfromeachmethodonthedynamicsofcapillarymotioncanbesignificantlydifferent.OneimportantresultfromthedirectcomparisonofthemovingcapillaryfrontpositionandthePwaveattributesisthatthewaveamplitudeisstronglympactedbeforethecapillaryfrontreachesthesensors,incontrastwiththevelocitychangewhichisconcomitantwiththefluidfrontarrivalinthesensorsplane.
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This page is a summary of: Detection of moving capillary front in porous rocks using X-ray and ultrasonic methods, Frontiers in Physics, July 2015, Frontiers,
DOI: 10.3389/fphy.2015.00053.
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