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Title: Monitoring Preferential Flow of Water in Sand Using Thermoacoustics Wave Imaging

Journal Article · · Geophysical Research Letters
ORCiD logo [1]; ORCiD logo [1];  [1]; ORCiD logo [2];  [3]; ORCiD logo [2];  [3]
  1. Department of Mechanical and Industrial Engineering Northeastern University Boston MA USA
  2. Department of Civil and Environmental Engineering Massachusetts Institute of Technology Cambridge MA USA
  3. Department of Mechanical and Industrial Engineering Northeastern University Boston MA USA, Department of Electrical and Computer Engineering Northeastern University Boston MA USA

Abstract Accurate predictions of fluid flow, mass transport, and reaction rates critically impact the efficiency and reliability of subsurface exploration and sustainable use of subsurface resources. Quantitative dynamical sensing and imaging can play a pivotal role in the ability to make such predictions. Geophysical thermoacoustic technology has the potential to provide the aforementioned capabilities, since it builds upon the principle that electromagnetic and mechanical wave fields can be coupled through a thermodynamic process. In this letter, we present laboratory experiments featuring the efficacy of thermoacoustic imaging in the monitoring of preferential flow of water in porous media. Our laboratory experimental equipment can be readily packaged in a form factor that fits in a borehole, and the use of multiple acoustic transducers—which can be combined with volumetric coding techniques—has the potential to provide quasi‐real‐time imaging (0.5 Hz video rate) of regions in close proximity (a few meters) of an open field well.

Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0017614; SC0018357
OSTI ID:
2204321
Journal Information:
Geophysical Research Letters, Journal Name: Geophysical Research Letters Journal Issue: 21 Vol. 50; ISSN 0094-8276
Publisher:
American Geophysical Union (AGU)Copyright Statement
Country of Publication:
United States
Language:
English

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