Validation of the Semi-Implicit Algorithm Time Stepping for MH4D

Autor:	George Marklin, Uri Shumlak, Srinath Vadlamani
Rok vydání:	2006
Předmět:	Constraint (information theory) Physics Nuclear and High Energy Physics Resistive touchscreen Finite volume method Nuclear Energy and Engineering Time stepping Tetrahedron Code (cryptography) Magnetohydrodynamic drive Magnetohydrodynamics Algorithm
Zdroj:	Journal of Fusion Energy. 26:227-232
ISSN:	1572-9591 0164-0313
DOI:	10.1007/s10894-006-9047-0
Popis:	We present the validation of the semi-implicit time stepping method for MH4D, a resistive magnetohydrodynamic finite volume code on a tetrahedral unstructured mesh. The time steps for standard explicit methods, which are constrained by the Courant–Friedrichs–Lewy (CFL) condition, are typically small for simulations of EC experiments due to the large sound and Alfven speeds. The CFL constraint on time stepping is more severe with a tetrahedral mesh. The implemented semi-implicit algorithm removes these fast waves constraint, thus allowing for larger time steps. For our validation problems, we see a significant increase in time step size due to the semi-implicit time stepping without effecting the physics.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0da6be2a6c1a33cc5d2e07b4ec15bb34 https://doi.org/10.1007/s10894-006-9047-0 Zobrazit plný text záznamu Full text from SpringerLink