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Please use this identifier to cite or link to this item: http://hdl.handle.net/11375/31431
Title: DEVELOPING A COUPLED MICROSTRUCTURE FLUID FLOW MODEL FOR SOLIDIFICATION IN ADDITIVE MANUFACTURING
Other Titles: Microstructural Evolution in Additive Manufacturing: Coupling Fluid Flow with Solidification Modelling
FLUID FLOW EFFECTS AND MICROSTRUCTURE FORMATION
Authors: Pashaei, Mahdi
Advisor: Ofori-Opoku, Nana
Department: Materials Science and Engineering
Keywords: Solidification Modeling;Fluid Flow in Additive Manufacturing;Melt Pool Dynamics;Coupled Fluid Flow and Solidification;Fluid-Solidification Interaction;Two-Way Coupling in Solidification;Fluid Flow Effects on Solidification;Navier-Stokes and Solidification Coupling;Coupled Navier-Stokes and Solidification;Microstructural Evolution in AM;Multiphysics Coupling of Navier-Stokes and Solidification
Publication Date: 2025
Abstract: This research focuses on understanding additive manufacturing (AM) microstructure to enhance properties. Focusing on microstructure evolution during solidification, we aim to provide deeper insights into material formation by exploring the often-neglected or partially integrated aspect of fluid flow within the melt pool. This fluid flow is crucial as it influences concentration and temperature distribution, impacting microstructure development and therefore material behaviour. To bridge this gap, our project is developing a phase-field modelling microstructural model for solidification, coupled with the Navier-Stokes equation for fluid dynamics. Using the Finite Element Method (FEM) based library, FEniCS, we present our current development of the multiphysics approach needed. In this talk, we describe the model contributions of each physics contribution and our benchmark results against known literature. We discuss the need for the direct coupling of these into a singular, fully coupled solver, enhancing our understanding and control of AM processes.
URI: http://hdl.handle.net/11375/31431
Appears in Collections:Open Access Dissertations and Theses

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