Determination of velocity vectors in porous media with fluorescent particle image velocimetry (FPIV)

Conference · Fri Feb 01 04:00:00 EST 1991

OSTI ID:5709666

Northrup, M A; Kulp, T J; Angel, S M ^[1]; Pinder, G F ^[2]

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1. Lawrence Livermore National Lab., CA (United States)
2. Vermont Univ., Burlington, VT (United States). Coll. of Engineering and Mathematics

Fluorescent particle image velocimetry (FPIV) is used in conjunction with refractive-index-matching to measure flow velocities in the interstitial regions of a porous medium. Adaptations that allow the use of conventional PIV methodology in index-matched systems are discussed, and the results of flow field measurements in a porous test bed under saturated flow conditions are presented. Preliminary analysis of these data, in which the horizontal and vertical components of the interstitial velocity vectors were averaged over a specified region within the medium, are also presented and compared with the predictions obtained from the total volumetric flow rate. The macroscopically derived and FPIV measured values are found to be in close agreement. In general, our results demonstrate the utility of the FPIV technique to determine both the point velocity and the local volume-averaged velocity within porous media.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5709666
• Report Number(s): UCRL-JC-105044; CONF-9008240--1; ON: DE92008597
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420400* -- Engineering-- Heat Transfer & Fluid Flow
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DISPERSION RELATIONS
FLUID FLOW
FLUORESCENCE
INTERSTITIALS
LUMINESCENCE
MATERIALS
MEASURING INSTRUMENTS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
POINT DEFECTS
POROUS MATERIALS
REFRACTIVE INDEX
VELOCIMETERS