Simple finite elements and multigrid for efficient mass-consistent wind downscaling in a coupled fire-atmosphere model
Numerical Analysis
2022-01-19 v1 Numerical Analysis
Atmospheric and Oceanic Physics
Abstract
We present a simple finite element formulation of mass-consistent approximation, and a fast multigrid iterative method with adaptive semicoarsening, which maintains the convergence of the iterations over a range of grids and penalty coefficients. The method is designed to run in each time step of WRF-SFIRE and replace the interpolation from the atmospheric mesh to the fire mesh by a diagnostic model of the air flow over a fine-scale terrain.
Cite
@article{arxiv.2101.08453,
title = {Simple finite elements and multigrid for efficient mass-consistent wind downscaling in a coupled fire-atmosphere model},
author = {J. Mandel and A. Farguell and A. K. Kochanski and D. V. Mallia and K. Hilburn},
journal= {arXiv preprint arXiv:2101.08453},
year = {2022}
}
Comments
4 pages, Seminar on Numerical Analysis - SNA'21, Ostrava, Czech Republic, January 25--28, 2021