Isamu Naets Publications

Isamu Naets

PhD Student for Geothermal Energy and Geofluids

isamu_naets-300x230

Mailing Address
Isamu Naets
Geothermal Energy & Geofluids
Institute of Geophysics
NO F 51.1
Sonneggstrasse 5
CH-8092 Zurich Switzerland


ORCID iD iconorcid.org/0000-0001-5322-0101

Contact
Phone +41 44 632 2558
Email inaets(at)erdw.ethz.ch

Administration
Dominique Ballarin Dolfin
Phone +41 44 632 3465
Email ballarin(at)ethz.ch

Publications

[Go to Proceedings Refereed]  [Go to Theses]

Underlined names are links to current or past GEG members

REFEREED PUBLICATIONS IN JOURNALS

1. 
Naets, I., M. Ahkami, P.-W. Huang, M. O. Saar, and X.-Z. Kong, Shear induced fluid flow path evolution in rough-wall fractures: A particle image velocimetry examination, Journal of Hydrology, 127793, (in press). [Download PDF] [View Abstract]Rough-walled fractures in rock masses, as preferential pathways, largely influence fluid flow, solute and energy transport. Previous studies indicate that fracture aperture fields could be significantly modified due to shear displacement along fractures. We report experimental observations and quantitative analyses of flow path evolution within a single fracture, induced by shear displacement. Particle image velocimetry and refractive index matching techniques were utilized to determine fluid velocity fields inside a transparent 3D-printed shear-able rough fracture. Our analysis indicate that aperture variability and correlation length increase with the increasing shear displacement, and they are the two key parameters, which govern the increases in velocity variability, velocity longitudinal correlation length, streamline tortuosity, and variability of streamline spacing. The increase in aperture heterogeneity significantly impacts fluid flow behaviors, whilst changes in aperture correlation length further refine these impacts. To our best knowledge, our study is the first direct measurements of fluid velocity fields and provides insights into the impact of fracture shear on flow behavior.


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THESES

1. 
Naets, I., Visualizing contact areas in roughfractures using 3D printing, MSc Thesis, ETH Zurich, 2018.