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multiphysics
Multiphysics treats simulations that involve multiple physical models or multiple simultaneous physical phenomena. For example, combining chemical kinetics and fluid mechanics or combining finite elements with molecular dynamics. Multiphysics typically involves solving coupled systems of partial differential equations.
Many physical simulations involve coupled systems, such as electric and magnetic fields for electromagnetism, pressure and velocity for sound, or the real and the imaginary part of the quantum mechanical wave function. Another case is the mean field approximation for the electronic structure of atoms, where the electric field and the electron wave functions are coupled.
==Single Discretization Method==
Advanced Simulation Library, Elmer〔(【引用サイトリンク】title=Elmer - CSC )〕 and MOOSE are examples of open source software packages for simulating multiphysics models. Abaqus, ADINA, Altair, ANSYS Multiphysics,〔(【引用サイトリンク】title=ANSYS Multiphysics )〕 Code_Aster,〔(【引用サイトリンク】title=Code_Aster )〕 CFD-ACE+, CFD-FASTRAN, COMSOL Multiphysics,〔(【引用サイトリンク】title=COMSOL Multiphysics )〕 FEATool,〔(【引用サイトリンク】title=FEATool )〕 FlexPDE, LS-DYNA, NEi Nastran, and OOFELIE〔(【引用サイトリンク】title=Oofelie )〕 are some examples of commercially available software packages. These software packages mainly rely on the Finite Element Method or similar commonplace numerical methods for simulating coupled physics: thermal stress, electromechanical interaction, fluid structure interaction (FSI), fluid flow with heat transport and chemical reactions, electromagnetic fluids (magnetohydrodynamics or plasma), electromagnetically induced heating. In many cases, to get accurate results, it is important to include mutual dependencies where the material properties significant for one field (such as the electric field) vary with the value of another field (such as temperature) and vice versa.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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