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DOE OSTI · 3653980

Lagrange-Remap strategy for multi-material fluid-solid simulations using compressive limiters

Guisset, S. [Alternative Energies and Atomic Energy Commission (CEA) (France)]·Tallois, L. [Alternative Energies and Atomic Energy Commission (CEA) (France)] (ORCID:0000000314180244)·Colaïtis, A. [Univ. of Rochester, NY (United States). Lab. for Laser Energetics] (ORCID:0000000349131653)·Breil, J. [Alternative Energies and Atomic Energy Commission (CEA) (France); Institute of Mechanics and Engineering (I2M) (France)]
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Abstract

In the present work, the Lagrange-Remap strategy proposed in [1] is extended to multi-material fluid-solid simulations. Both hypo-elastic and hyper-elastic material models are considered to describe the mechanical behavior of the solids. In practice, the deviatoric stress tensor (for hypo-elastic materials) and the left Cauchy-Green tensor (for isotropic hyper-elastic materials) are remapped, while the use of compressive limiters effectively reduces numerical diffusion during the remapping step. The simplicity of this diffuse interface approach is emphasized in the context of multi-material fluid-solid simulations. A series of Lagrange-Remap test cases, involving both solids and fluids, are conducted and compared with reference Lagrangian simulations, demonstrating the robustness and accuracy of the overall numerical strategy.

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Compressive limitersDiffuse interface methodsHypo-elastic and hyper-elastic materialsLagrange-Remap schemesMulti-material simulations

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Guisset, S. [Alternative Energies and Atomic Energy Commission (CEA) (France)], Tallois, L. [Alternative Energies and Atomic Energy Commission (CEA) (France)] (ORCID:0000000314180244), Colaïtis, A. [Univ. of Rochester, NY (United States). Lab. for Laser Energetics] (ORCID:0000000349131653), Breil, J. [Alternative Energies and Atomic Energy Commission (CEA) (France); Institute of Mechanics and Engineering (I2M) (France)]. 2026-09-01. Lagrange-Remap strategy for multi-material fluid-solid simulations using compressive limiters. https://doi.org/10.1016/j.camwa.2026.06.015

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Compressive limiters subjectDiffuse interface methods subjectHypo-elastic and hyper-elastic materials subjectLagrange-Remap schemes subjectMulti-material simulations subject

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