Micro-tomographic measurements of elastic turbulence
| Project/Area Number |
21K14080
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 19010:Fluid engineering-related
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| Research Institution | Okinawa Institute of Science and Technology Graduate University |
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Principal Investigator |
CARLSON DANIEL 沖縄科学技術大学院大学, マイクロ・バイオ・ナノ流体ユニット, ポストドクトラルスカラー (50896256)
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| Project Period (FY) |
2021-04-01 – 2023-03-31
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| Project Status |
Completed (Fiscal Year 2022)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
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| Keywords | Microfluidics / polymer solution / flow instability / Tomographic PIV / Viscoelasticity / porous media flow / elastic turbulence / micro-tomographic PIV / viscoelasticity / porous media |
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| Outline of Research at the Start |
Elastic turbulence (ET) will be investigated using innovative 3D flow measurements only possible by micro-tomographic PIV, providing the first 3D statistical basis to delineate the elastic turbulence.
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| Outline of Final Research Achievements |
Elastic turbulence (ET) is a nascent area of research in fluid mechanics, first classified only 20 years ago. ET is a chaotic flow state driven by nonlinear microstructure (i.e., polymer chains) stresses reacting with the flow, which has industrial potential for mixing, heat transport, enhanced oil recovery, and groundwater remediation as some examples. ET is inherently three-dimensional (3D), but until now has only been characterized in 2D. In this study we leverage state-of-the-art micro-scale 3D particle image velocimetry to fully measure the ET flow state. We combine this approach with novel microfluidic devices constructed from selective laser-induced etching (SLE) to probe the evolution of ET over broad spatial scales. Using flow kinematics coupled to the fluid rheology we relate the propagation of ET as the feedback between flow resistance and elastic stresses.
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| Academic Significance and Societal Importance of the Research Achievements |
The results from this work have fundamental and industrial applications not only to elastic turbulence in general, but to viscoelastic porous media flow in particular, and to the use of microtomographic PIV for microfluidic research. This has yielded several publications in international journals.
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Report
(3 results)
Research Products
(5 results)
