Investigation of thermal evolution and fluid flow in the hot-end of a material extrusion 3D Printer using melting model
CO Ufodike, GC Nzebuka - Additive Manufacturing, 2022 - Elsevier
Abstract This work presents Computational Fluid Dynamics (CFD) simulations of the thermal
evolution and fluid flow in the hot-end during material extrusion in fuse filament fabrication …
evolution and fluid flow in the hot-end during material extrusion in fuse filament fabrication …
Numerical modeling of the effect of nozzle diameter and heat flux on the polymer flow in fused filament fabrication
A numerical model that fully account for the velocity of the traveling filament (push velocity)
in the liquefier is presented in the current work to predict the pressure, temperature, outlet …
in the liquefier is presented in the current work to predict the pressure, temperature, outlet …
Influence of various aspects of low-Reynolds number turbulence models on predicting flow characteristics and transport variables in a horizontal direct-chill casting
Abstract Computational Fluid Dynamics (CFD) was used to simulate the solidification in a
horizontal direct-chill (HDC) casting using five low-Re k-ɛ turbulence model: including the v …
horizontal direct-chill (HDC) casting using five low-Re k-ɛ turbulence model: including the v …
Investigation of macrosegregation for different dendritic arm spacing, casting temperature, and thermal boundary conditions in a direct-chill casting
MA Waheed, GC Nzebuka - Applied Physics A, 2020 - Springer
The study of macrosegregation for different dendritic arm spacing, casting temperature, and
cooling conditions in a Direct-Chill (DC) casting was investigated in the present study. The …
cooling conditions in a Direct-Chill (DC) casting was investigated in the present study. The …
Modelling the fluid flow, solidification and segregation behavior in electromagnetic DC casting of magnesium alloy
W Duan, Y Yang, W Liu, Z Zhang, J Cui - Simulation Modelling Practice …, 2022 - Elsevier
Making clear the metallurgical transport behaviors during direct chill (DC) casting is of great
significance to control the solidified structure and reduce the casting defects, but it still …
significance to control the solidified structure and reduce the casting defects, but it still …
Melt pool turbulence effects on the interface between dissimilar materials manufactured by directed energy deposition with laser and powder
V Jacquier, J Zollinger, P Zeller, M Dal… - Journal of Materials …, 2021 - Springer
Directed energy deposition (DED) with laser and powder allows the manufacturing of multi-
metallic near net shape structures, with control over the feedstock composition and intense …
metallic near net shape structures, with control over the feedstock composition and intense …
Analysis of thermally driven flow pattern formation in aluminium DC casting for different Rayleigh numbers and billet diameters
MA Waheed, GC Nzebuka - Thermal Science and Engineering Progress, 2020 - Elsevier
The formation of final billet quality in the Direct-Chill (DC) casting of aluminum alloy can
usually be a function of flow characteristics in the bulk liquid/slurry and the mushy zone. The …
usually be a function of flow characteristics in the bulk liquid/slurry and the mushy zone. The …
Modeling of the Sump Profile During DC and MC-DC Casting Based on a Functional Packing Fraction
The sump profile during direct-chill (DC) casting provides critical information for
understanding the solidification mechanism. In this work, the influence of the solid packing …
understanding the solidification mechanism. In this work, the influence of the solid packing …
Micro-macro model for the transient heat and fluid transport in solidification structure evolution during static casting processes
The current work used micro-macro model to study the transient fluid flow patterns, heat
transfer and solute segregation during the solidification of eutectic binary Al-4% Cu alloy in a …
transfer and solute segregation during the solidification of eutectic binary Al-4% Cu alloy in a …
Potent turbulence model for the computation of temperature distribution and eddy viscosity ratio in a horizontal direct-chill casting
MA Waheed, GC Nzebuka… - Numerical Heat Transfer …, 2020 - Taylor & Francis
The present study investigates the performance of selected turbulence models to predict the
temperature distribution and eddy viscosity ratio in a horizontal direct-chill casting. The …
temperature distribution and eddy viscosity ratio in a horizontal direct-chill casting. The …