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A Note on the Use o...
A Note on the Use of Uranine Tracer to Visualize Radionuclide Migration Experiments : Some Observations and Problems
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- Winberg-Wang, Helen (author)
- KTH,Kemiteknik
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- Neretnieks, Ivars (author)
- KTH,Kemiteknik
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- Voutilainen, Mikko (author)
- Univ Helsinki, Dept Chem, Helsinki, Finland.
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(creator_code:org_t)
- 2019-03-25
- 2019
- English.
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In: Nuclear Technology. - : Taylor & Francis. - 0029-5450 .- 1943-7471. ; 205:7, s. 964-977
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Abstract
Subject headings
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- Uranine is a dye commonly used in tracer experiments; it is chosen for its high visibility even at low concentrations. Uranine solutions are slightly denser than water at the same temperature. However, in laboratory experiments uranine solutions have been known to occasionally show unpredictable flow behaviors. This paper investigates the possible effect of light-induced density change to explain some of these behaviors. Uranine has a wide light absorption spectrum for visible light, which can heat the dye solution and lower its density to below that of the surrounding water, which induces buoyancy-driven flow. Simulations are made in both one dimension and two dimensions to determine the extent of the effect. The results are then compared to different experiments with unanticipated flow patterns.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Annan teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Other Engineering and Technologies (hsv//eng)
Keyword
- Uranine
- fluorescein tracer experiments
- flow patterns in fractures
- light-induced density-driven flow
- buoyancy flow in fractures
Publication and Content Type
- ref (subject category)
- art (subject category)
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