| 研究課題/領域番号 |
23K13403
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| 研究機関 | 京都大学 |
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研究代表者 |
ZHU FAN 京都大学, 工学研究科, 准教授 (80968553)
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| 研究期間 (年度) |
2023-04-01 – 2026-03-31
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| キーワード | fracture / peridynamics / fluid-solid-interaction / particle method |
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| 研究実績の概要 |
The following work has been completed as scheduled.
1). A peridynamics-based fluid solver is developed based on an updated-Lagrangian computing scheme. To improve numerical stability, stabilization schemes are implemented. The scheme is validated with water dam collapsing experiments.
2). A coupled hydro-mechanical peridynamic method is developed for simulation of fluid-driven fracturing in solids. Classical peridynamics theory is used for simulating solid with fracturing, update-Lagrangian peridynamics is adopted for fluid modeling, with a fictious-point solid-fluid interaction modeling scheme. The new method is proven effective in modeling hydraulic fracturing in impermeable solid by comparing with theoretical solutions.
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| 現在までの達成度 (区分) |
現在までの達成度 (区分)
2: おおむね順調に進展している
理由
The planned work up to the first quarter of 2024 has been finished as scheduled, including development of a peridynamics-based fluid solver and a fluid-solid interaction modeling scheme. The planned work in 2024-2025 is being progressed smoothly, including development of poroelastic peridynamics model and hydraulic fracturing in porous media. Coupled hydro-thermal-mechanical solver is under development.
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| 今後の研究の推進方策 |
Focus will be placed in the following research directions:
1. A poroelastic peridynamic computation library will be developed, based on the poroelastic theory and flow governing equation with implementation of non-local integral-differentiation operator. New formulation will be derived and implemented with computer codes. The computation scheme will be validated with a series of experiments and theoretical solutions such as flow and hydraulic fracturing in porous media.
2. A fully coupled thermal-mechanical peridynamic formulation will be derived and implemented with consideration of temperature-dependence of deformation as well as deformation-dependence of heat conduction. Finally a coupled hydro-thermal-mechanical peridynamic computational scheme will be formed.
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| 次年度使用額が生じた理由 |
The fund for the next year will cover the expense of hiring a proper researcher for this project and domestic travel expense for disseminating research outcome in conferences.
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