A Hybrid Acceleration for Self-gravity Calculation in Infinitesimally Thin Disks with Adaptive Mesh Refinement
4 affiliations
- 1Fu Jen Catholic University
- 2Academia Sinica
- 3National Taiwan University
- 4Department of Aerospace Engineering, Georgia Institute of Technology, GA,
Abstract
Y.-H. Tseng et al. developed a direct approach for the computation of self-gravitational force to second-order accuracy based on adaptive mesh refinement. This direct approach is free of artificial boundary conditions, enabling realistic simulations of astronomical gaseous disks with speedups by graphics processing units (GPUs). On the other hand, the fast Fourier transform (FFT) on uniform grids requires variation in the number of zones. A hybrid method (HM) of the direct and the FFT methods can effectively replace the GPU acceleration in speeding up the computation. Numerical simulations demonstrate the computational time of the HM is less than that of the direct plus GPU acceleration and scales nearly linearly as the total number of zones when a sufficiently large number of zone sizes is selected. An application to a two-arm spiral is demonstrated for the generality of the proposed method.
Related
- Exploring Cosmic Rays from Gravity-Limited Acceleration at Supermassive Black Holes
- Adaptive proposals for nonparametric equation-of-state inference with RIFT: iterative Gaussian-process refinement in a compressed sequence representation
- The driving mode of turbulence in disc galaxy simulations with adaptive mesh refinement
- The MOND Acceleration Scale as a de Sitter Curvature Scale: Gauged SO(4,1) Gravity Reduces a0 = c^2 sqrt(Lambda/32pi) to a Single Free Number
- Calculation of distant retrograde orbits and their use in space weather forecasting
BibTeX
@article{嚴2026hybrid,
title = {{A Hybrid Acceleration for Self-gravity Calculation in Infinitesimally Thin Disks with Adaptive Mesh Refinement}},
author = {Chien-Chang 健彰 Yen 嚴 and Yung-Ching 詠晴 Sun 孫 and Yao-Huan 耀寰 Tseng 曾 and Hsien 賢 Shang 尚 and Ruben Krasnopolsky},
journal = {The Astrophysical Journal Supplement Series},
year = {2026},
month = oct,
doi = {10.3847/1538-4365/ae9caf},
url = {https://iopscience.iop.org/article/10.3847/1538-4365/ae9caf},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - A Hybrid Acceleration for Self-gravity Calculation in Infinitesimally Thin Disks with Adaptive Mesh Refinement
AU - Chien-Chang 健彰 Yen 嚴
AU - Yung-Ching 詠晴 Sun 孫
AU - Yao-Huan 耀寰 Tseng 曾
AU - Hsien 賢 Shang 尚
AU - Ruben Krasnopolsky
PY - 2026
DA - 2026/10/05
JO - The Astrophysical Journal Supplement Series
DO - 10.3847/1538-4365/ae9caf
UR - https://iopscience.iop.org/article/10.3847/1538-4365/ae9caf
AB - Y.-H. Tseng et al. developed a direct approach for the computation of self-gravitational force to second-order accuracy based on adaptive mesh refinement. This direct approach is free of artificial boundary conditions, enabling realistic simulations of astronomical gaseous disks with speedups by graphics processing units (GPUs). On the other hand, the fast Fourier transform (FFT) on uniform grids requires variation in the number of zones. A hybrid method (HM) of the direct and the FFT methods can effectively replace the GPU acceleration in speeding up the computation. Numerical simulations demonstrate the computational time of the HM is less than that of the direct plus GPU acceleration and scales nearly linearly as the total number of zones when a sufficiently large number of zone sizes is selected. An application to a two-arm spiral is demonstrated for the generality of the proposed method.
SN - 0067-0049
SN - 1538-4365
ER -