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...analysis (FEA) can solve, for example, the basic equations fluid flow and structural mechanics, respectively, at an incremental level and then integrate those solutions across the whole system. By combining these techniques with other PDE solvers, for say heat transfer functions, you then start to get a complete picture of the process or system in model form, which can then be used for design or simulation.
These models are undoubtedly mathematically elegant but they have in the past required an enormous amount of computational and, many would say, intellectual power to develop.
A software package that has only just come on the market, however, has taken modelling to the next stage by offering an expanded 'multiphysics' capability. Developed by Oxford-based Comsol, FEMLAB 3 can model virtually any physical phenomena that can be described with PDEs, and do so in a way that links different disciplines all in the one package. 'For example,' says Comsol md Patrik Bosander, 'the analysis of a fuel cell might involve not only chemical reactions and electrical currents...
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