Wavelet-based parallel dynamic mesh adaptation for magnetohydrodynamics in the AMROC framework. (15th August 2019)

• Record Type: Journal Article
• Authors: Domingues, Margarete Oliveira; Deiterding, Ralf; Moreira Lopes, Muller; Gomes, Anna Karina Fontes; Mendes, Odim; Schneider, Kai
• Is Part Of: Computers & fluids. Volume 190(2019)
• Page Start: 374
• Page End: 381
• Publication Date: 2019-08-15
• Subjects: AMROC -- Magnetohydrodynamics -- Finite volume -- Mesh refinement -- Wavelet -- Multiresolution; Fluid dynamics -- Data processing -- Periodicals; 532.050285
• DOI: 10.1016/j.compfluid.2019.06.025
• Languages: English
• ISSNs: 0045-7930

Abstract

Highlights: A parallel dynamically wavelet-based adaptive magnetohydrodynamic solver is developed. Structured mesh adaptation is provided by the AMROC framework. Several tests in 2D and 3D are used to demonstrate robustness. Good parallel scalability is obtained with dynamic refinement. Abstract: Computational magnetohydrodynamics (MHD) for space physics has become an essential area in understanding the multiscale dynamics of geophysical and astrophysical plasma processes, partially motivated by the lack of space data. Full MHD simulations are typically very demanding and may require substantial computational efforts. In particular, computational space-weather forecasting is an essential long-term goal in this area, motivated for instance by the needs of modern satellite communication technology. We present a new feature of a recently developed compressible two- and three-dimensional MHD solver, which has been successfully implemented into the parallel AMROC (Adaptive Mesh Refinement in Object-oriented C++) framework with improvements concerning the mesh adaptation criteria based on wavelet techniques. The developments are related to computational efficiency while controlling the precision using dynamically adapted meshes in space-time in a fully parallel context.