期刊
PHYSICS OF FLUIDS
卷 32, 期 5, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/5.0006679
关键词
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资金
- Department of Chemical Engineering, Imperial College London by EPSRC [1508319]
- UK Engineering and Physical Sciences Research Council (EPSRC) [18755724]
- Syngenta Ltd.
- Shell
- Qatar Science and Technology Park
- Qatar Petroleum
Analog fluids have been widely used to mimic the convective mixing of carbon dioxide into brine in the study of geological carbon storage. Although these fluid systems had many characteristics of the real system, the viscosity contrast between the resident fluid and the invading front was significantly different and largely overlooked. We used x-ray computed tomography to image convective mixing in a three-dimensional porous medium formed of glass beads and compared two invading fluids that had a viscosity 3.5x and 16x that of the resident fluid. The macroscopic behavior such as the dissolution rate and onset time scaled well with the viscosity contrast. However, with a more viscous invading fluid, fundamentally different plume structures and final mixing state were observed due in large part to greater dispersion.
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