ncku-talk2020-06-04

Colloquium

DATE 2020-06-04　16:10-17:00

PLACE 數學館3174教室

SPEAKER 陳孟豁助理教授（中正大學數學系）

TITLE Fluid-Structure Interactions: One-Field Monolithic Fictitious Domain Method and its Parallelization

ABSTRACT In this research we implement the parallelization of the method: one-field monolithic fictitious domain (MFD), an algorithm for simulation of general fluid-structure interactions (FSI). In this algorithm only one velocity field is solved in the whole domain (one-field) based upon the use of an appropriate L2 projection. ”Monolithic” means the fluid and solid equations are solved synchronously (rather than sequentially). For simulation of fluid-structure in-teractions on 3D domain the algorithm and the solving of the linear systems arising from the discretization need to be parallelized in order to reduce the simulation time from several months to few days. At the initial stage of the research we focus on parallelizing the algorithm on uniform meshes. The imple-mented parallel algorithm is then extended to the simulations on nonuniform meshes, where an adaptive mesh refinement scheme is used to improve the ac-curacy and robustness. Our goal is to provide an eÿcient, robust algorithm which can handle the diÿcult fluid-structure interactions such as the collision of multiple immersed solids in fluid where the high resolution mesh is necessary for resolving the phenomena near the collision and fluid-structure interfaces.

Colloquium

DATE	2020-06-04　16:10-17:00

PLACE	數學館3174教室

SPEAKER	陳孟豁助理教授（中正大學數學系）

TITLE	Fluid-Structure Interactions: One-Field Monolithic Fictitious Domain Method and its Parallelization

ABSTRACT	In this research we implement the parallelization of the method: one-field monolithic fictitious domain (MFD), an algorithm for simulation of general fluid-structure interactions (FSI). In this algorithm only one velocity field is solved in the whole domain (one-field) based upon the use of an appropriate L2 projection. ”Monolithic” means the fluid and solid equations are solved synchronously (rather than sequentially). For simulation of fluid-structure in-teractions on 3D domain the algorithm and the solving of the linear systems arising from the discretization need to be parallelized in order to reduce the simulation time from several months to few days. At the initial stage of the research we focus on parallelizing the algorithm on uniform meshes. The imple-mented parallel algorithm is then extended to the simulations on nonuniform meshes, where an adaptive mesh refinement scheme is used to improve the ac-curacy and robustness. Our goal is to provide an eÿcient, robust algorithm which can handle the diÿcult fluid-structure interactions such as the collision of multiple immersed solids in fluid where the high resolution mesh is necessary for resolving the phenomena near the collision and fluid-structure interfaces.