Signal processing approach to mesh refinement in simulations of axisymmetric droplet dynamics
نویسندگان
چکیده
We propose a novel mesh refinement scheme based on signal processing for boundary integral simulations of inviscid droplet dynamics with axial symmetry. A key idea is to directly access the Fourier coefficients principal curvature as function arclength through natural change variables. The trapezoidal rule applied those Fourier-type integrals and resulting formula fits in framework non-uniform fast transform. This observation enables efficiently use an envelope analysis smoothing filter generate guidelines two singularity formation scenarios. Applications also include non-iterative construction uniform parametrization important class plane curves, which used convergence study time-stepping procedure implemented previous work by Nitsche Steen [J. Comput. Phys. 200 (2004) 299].
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ژورنال
عنوان ژورنال: Journal of Computational and Applied Mathematics
سال: 2021
ISSN: ['0377-0427', '1879-1778', '0771-050X']
DOI: https://doi.org/10.1016/j.cam.2020.113131