2022 Fiscal Year Final Research Report
Purely Elastic Flow-induced Vibrations of Microcylinders : Viscoelastic Fluid-Structure Interaction in Microfluidics
| Project/Area Number |
20K14656
|
|---|
| Research Category |
Grant-in-Aid for Early-Career Scientists
|
| Allocation Type | Multi-year Fund |
|---|
| Review Section |
Basic Section 19010:Fluid engineering-related
|
|---|
| Research Institution | Okinawa Institute of Science and Technology Graduate University |
|---|
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)
|
|---|
| Project Period (FY) |
2020-04-01 – 2023-03-31
|
| Keywords | viscoelasticity / microfluidics / flow instability / cylinder / rheology / wormlike micelles / polymers / non-Newtonian fluids |
|---|
| 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.
|
| Free Research Field |
Viscoelastic Fluid Dynamics
|
| 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.
|
