| Project/Area Number |
20K14656
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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 |
Hopkins Cameron 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 (50865954)
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Project Status |
Completed (Fiscal Year 2022)
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| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2021: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2020: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | viscoelasticity / microfluidics / flow instability / cylinder / rheology / wormlike micelles / polymers / non-Newtonian fluids / Microfluidics / Complex Fluids / Fluid Mechanics / Viscoelasticity / Cylinder / Micelles / Instability / Polymers / Complex fluids / Fluid mechanics / Fluid-structure / Fluid dynamics / FSI / Rheology |
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| Outline of Research at the Start |
Slender microscopic objects like fibers or cilia interact with viscoelastic fluids (that possess liquid and solid-like properties) in many biological and industrially-relevant systems. In this research project we will use microfluidic techniques to study these complex interactions in the lab.
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| Outline of Final Research Achievements |
Viscoelastic fluids have intermediate properties between viscous fluids and elastic solids. These fluids interact with slender objects in many biological and industrial systems, and the interactions can be modelled as flow past a cylinder in a microchannel. At small enough length scales fluid elasticity dominates the flow, leading to purely elastic flow instabilities. The aim of this project was to characterize the interaction between viscoelastic fluids and slender objects. As a result, novel elastic flow instabilities were discovered and characterized in several systems. This work establishes a foundation for future fundamental research in viscoelastic flows.
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| Academic Significance and Societal Importance of the Research Achievements |
The research is of interest to the microfluidics, fluid mechanics, rheology, and broader engineering and physics communities and has resulted in 9 papers published in international peer-reviewed journals. The research findings improve our understanding of viscoelastic flow instabilities.
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