About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Presentation Title |
A Multiphysics Computational Framework for Interfacial Fluid - Particle Interaction in Binder Jet 3D Printing |
Author(s) |
Joshua Wagner, C. Fred Higgs III |
On-Site Speaker (Planned) |
Joshua Wagner |
Abstract Scope |
The underlying physics of powder bed additive manufacturing (AM) methods, namely binder jet 3D printing (BJ3DP) and powder bed fusion (PBF), include interfacial fluid flow, particle dynamics, and the simultaneous interaction of the two. Recently, numerical simulation has been employed to investigate the melt pool dynamics and binder migration in PBF and BJ3DP, respectively. However, the coupling of particle motion with these interfacial flows is notoriously difficult to model and thus has largely been ignored. We present a novel framework capable of simulating the fully-coupled fluid-particle interaction in BJ3DP. The volume-of-fluid method with adaptive mesh refinement is used to capture high-resolution interfacial dynamics with increased computational efficiency. The discrete element method is adopted to model particle motion, and the fluid-particle coupling is realized through an immersed boundary approach. A heterogeneous CPU-GPU parallelization strategy is employed for increased performance. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |