2022 Fiscal Year Annual Research Report
Micro-tomographic measurements of elastic turbulence
| Project/Area Number |
21K14080
|
|---|
| Research Institution | Okinawa Institute of Science and Technology Graduate University |
|---|
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)
|
|---|
| Project Period (FY) |
2021-04-01 – 2023-03-31
|
| Keywords | Microfluidics / elastic turbulence / micro-tomographic PIV / viscoelasticity / flow instability / porous media |
|---|
| Outline of Annual Research Achievements |
We accomplished our research targets for FY2022. We captured the chaotic flow response of a dilute polymer solution in complete three-dimensions (3D), an instability known as elastic turbulence (ET). We related the evolution of ET to elastic stress as a competition of vessel-scale pockets of instability leading to increased pressure drop, generating insights relevant to fluid mechanics in general and to porous media flow in particular. Furthermore we deployed the measurement technique (micro-tomographic particle image velocimetry) to develop a novel microfluidic extensional rheometer.
|
