Progress in development of HEDP capabilities in FLASH’s Unsplit Staggered Mesh MHD solver
| العنوان: | Progress in development of HEDP capabilities in FLASH’s Unsplit Staggered Mesh MHD solver |
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| المؤلفون: | Klaus Weide, D. Q. Lamb, S. Gopal, Dongwook Lee, G. Xia, Chris Daley, Carlo Graziani, Anshu Dubey |
| المصدر: | Astrophysics and Space Science. 336:157-162 |
| بيانات النشر: | Springer Science and Business Media LLC, 2011. |
| سنة النشر: | 2011 |
| مصطلحات موضوعية: | Physics, business.industry, Astronomy and Astrophysics, Solver, Thermal conduction, Computational science, Flash (photography), Space and Planetary Science, Limit (music), Compressibility, Code (cryptography), Statistical physics, Magnetohydrodynamics, business, Thermal energy |
| الوصف: | FLASH is a publicly available astrophysical community code designed to solve highly compressible multi-physics reactive flows. We are adding capabilities to FLASH that will make it an open science code for the academic HEDP community. Among many important numerical requirements, we consider the following features to be important components necessary to meet our goals for FLASH as an HEDP open toolset. First, we are developing computationally efficient time-stepping integration methods that overcome the stiffness that arises in the equations describing a physical problem when there are disparate time scales. To this end, we are adding two different time-stepping schemes to FLASH that relax the time step limit when diffusive effects are present: an explicit super-time-stepping algorithm (Alexiades et al. in Com. Num. Mech. Eng. 12:31–42, 1996) and a Jacobian-Free Newton-Krylov implicit formulation. These two methods will be integrated into a robust, efficient, and high-order accurate Unsplit Staggered Mesh MHD (USM) solver (Lee and Deane in J. Comput. Phys. 227, 2009). Second, we have implemented an anisotropic Spitzer-Braginskii conductivity model to treat thermal heat conduction along magnetic field lines. Finally, we are implementing the Biermann Battery term to account for spontaneous generation of magnetic fields in the presence of non-parallel temperature and density gradients. |
| تدمد: | 1572-946X 0004-640X |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::8f3edb536d75057c5cf075078d982389 https://doi.org/10.1007/s10509-011-0654-5 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi...........8f3edb536d75057c5cf075078d982389 |
| قاعدة البيانات: | OpenAIRE |
Find this article in full text from Springer Verlag. | تدمد: | 1572946X 0004640X |
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