Spline-based solution transfer for space-time methods in 2D+t
<|reference_start|>Spline-based solution transfer for space-time methods in 2D+t: This work introduces a new solution-transfer process for slab-based space-time finite element methods. The new transfer process is based on Hsieh-Clough-Tocher (HCT) splines and satisfies the following requirements: (i) it maintains high-order accuracy up to 4th order, (ii) it preserves a discrete maximum principle, (iii) it asymptotically enforces mass conservation, and (iv) it constructs a smooth, continuous surrogate solution in between space-time slabs. While many existing transfer methods meet the first three requirements, the fourth requirement is crucial for enabling visualization and boundary condition enforcement for space-time applications. In this paper, we derive an error bound for our HCT spline-based transfer process. Additionally, we conduct numerical experiments quantifying the conservative nature and order of accuracy of the transfer process. Lastly, we present a qualitative evaluation of the visualization properties of the smooth surrogate solution.<|reference_end|>
@article{larose2024spline-based,
    title={Spline-based solution transfer for space-time methods in 2D+t},
    author={Logan Larose, Jude T. Anderson, David M. Williams},
    journal={arXiv preprint arXiv:2409.11639},
    year={2024},
    archivePrefix={arXiv},
    eprint={2409.11639},
    primaryClass={math.NA cs.NA}
}