| 研究課題/領域番号 |
22K14184
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| 研究種目 |
若手研究
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| 配分区分 | 基金 |
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| 審査区分 |
小区分19010:流体工学関連
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| 研究機関 | 沖縄科学技術大学院大学 |
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研究代表者 |
VARCHANIS Stylianos 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 (30913462)
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| 研究期間 (年度) |
2022-04-01 – 2024-03-31
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| 研究課題ステータス |
完了 (2023年度)
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| 配分額 *注記 |
1,820千円 (直接経費: 1,400千円、間接経費: 420千円)
2023年度: 910千円 (直接経費: 700千円、間接経費: 210千円)
2022年度: 910千円 (直接経費: 700千円、間接経費: 210千円)
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| キーワード | Viscoelastic / FSI / Flow instability / Porous media / Microfluidics |
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| 研究開始時の研究の概要 |
In this project, the applicant will develop a new, fully consistent, and highly stable Finite Element formulation for the simulation of the flow and interaction of viscoelastic fluids with elastic structures. This will be the first numerical method that will address the multiphysics coupling between the laws that describe non-Newtonian fluid dynamics and structural mechanics. The algorithm will be employed to study the underlying physics in a problem that arises in microscale biological processes: the 3-dimensional viscoelastic flow past a single or an array of deformable elastic posts.
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| 研究実績の概要 |
We simulated the base case for increasing flow rates (Weissenberg number) to explore the response of the system. We found that a Hopf bifucartion drives the system from steady to time-dependent states. We performed a parametric study regarding the extensibility of polyner solution and the elastic modulus of the solid. Low polymer extensibility and high solid elastic modulus suppress time dependent states. We also studied the effect of the blockage ratio, aspect ratio, and angles of attack. We find that time dense fiber beds promote time-dependent states. In all cases we derived an apparent permeability coefficient (Darcy-like law) and a slip length.
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