DOAJ Open Access 2023

Second-Order Time-Accurate ALE Schemes for Flow Computations with Moving and Topologically Changing Grids

Daniel Costero Federico Piscaglia

Abstrak

In computations of unsteady flow problems by the arbitrary Lagrangian–Eulerian (ALE) method, the introduction of the grid velocity in the transport terms of the governing equations is not a sufficient condition for conservativeness if topology changes in the dynamic mesh are present and the number of mesh cells changes. We discuss an extension to second-order time differencing schemes (Implicit Euler and Crank–Nicolson) in the finite volume framework, to achieve second-order time-accuracy of the solution. Numerical experiments are given to illustrate the effectiveness of the presented method.

Topik & Kata Kunci

Thermodynamics Descriptive and experimental mechanics

Penulis (2)

Daniel Costero

Federico Piscaglia

Format Sitasi

APA MLA BibTeX

Costero, D., Piscaglia, F. (2023). Second-Order Time-Accurate ALE Schemes for Flow Computations with Moving and Topologically Changing Grids. https://doi.org/10.3390/fluids8060177

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Informasi Jurnal

Tahun Terbit: 2023
Sumber Database: DOAJ
DOI: 10.3390/fluids8060177
Akses: Open Access ✓