CASTS Seminar 

Speaker: Prof. Jinhui Yan ( Department of Civil and Environmental Engineering University of Illinois Urbana-Champaign )
Title: Computational multi-phase flow: recent method development and applications
Abstract: 

Multi-phase flow simulations play an essential role in the design and optimization of many engineering systems. Representative examples include offshore floating wind turbines and metallic additive manufacturing. In addition to handling the complex fluid flows, two key issues need to be solved. The first one is how to treat the fluid-fluid interface, which involves large property ratios, pressure discontinuity, and violent topological changes. The second one is how to treat the fluid-structure interface, which has complicated geometry for real engineering structures and the surrounding thin boundary layers.

The presentation features the recent efforts in my research group to address the above challenges in multi-phase flow simulations. I will start with a level-set based variational multi-scale formulation for resolving turbulent flows and the fluid-fluid interface. I will show the application of the formulation, coupled with thermodynamics, to modeling the metallic additive manufacturing process. Then, I will present an isogeometric free-surface fluid-structure interaction that can simulate thin-shell structures directly based on CAD models. Both boundary-fitted and non-boundary-fitted approaches for the fluid-structure interface will be explored. I will present the applications to renewable wind energy.

Date: Friday, December 20, 2019
Time: 14:00
Place: Room 103, Mathematics Research Center Building (ori. New Math. Bldg.), NTU
Organizer: Prof. Tony Wen Hann Sheu (Dept. of Engineering Science and Ocean Engineering, NTU)

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Center for Advanced Study in Theoretical Sciences, NTU
Tel: 886-2-3366-9902 (Wei-Jhen Tsai)
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