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High-Order Adaptive Arbitrary-Lagrangian-Eulerian (ALE) Calculations of Solidification

[+] Author Affiliations
Brian T. Helenbrook

Clarkson University, Potsdam, NY

Paper No. FEDSM2013-16178, pp. V01CT25A001; 10 pages
doi:10.1115/FEDSM2013-16178
From:
  • ASME 2013 Fluids Engineering Division Summer Meeting
  • Volume 1C, Symposia: Gas-Liquid Two-Phase Flows; Industrial and Environmental Applications of Fluid Mechanics; Issues and Perspectives in Automotive Flows; Liquid-Solids Flows; Multiscale Methods for Multiphase Flow; Noninvasive Measurements in Single and Multiphase Flows; Numerical Methods for Multiphase Flow; Transport Phenomena in Energy Conversion From Clean and Sustainable Resources; Transport Phenomena in Materials Processing and Manufacturing Processes; Transport Phenomena in Mixing; Turbulent Flows: Issues and Perspectives
  • Incline Village, Nevada, USA, July 7–11, 2013
  • Conference Sponsors: Fluids Engineering Division
  • ISBN: 978-0-7918-5556-0
  • Copyright © 2013 by ASME

abstract

A high-order-accurate method for simulation of solidification is presented. The solidification front is tracked using an ALE method on an unstructured triangular mesh, and a high-order hp-finite element method is used to resolve the thermal and flow fields. This is combined with a mesh adaption algorithm to allow simulations of problems with large interfacial movement and an A-stable diagonally-implicit Runge-Kutta scheme for the temporal discretization. The method was demonstrated to give a temporal order of accuracy near 3 by comparing to a 1D analytic solution of melting. The spatial accuracy was calculated to be nearly 5th order for an approximation space of degree 4. Even for this simple case, the mesh adaption algorithm improved the accuracy over a simulation where the mesh only deformed. For a practical demonstration, the algorithm was used to simulate horizontal ribbon growth and was able to resolve solutions where the solid layer thickness decreased by a factor of 20 over the course of the simulation.

Copyright © 2013 by ASME
Topics: Solidification

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