A. Smirnov, A. Burt, H. Zhang, and I. Celik (USA)
multi-physics modeling, multi-component systems, CFD,fuel cells, geometrical design
In order to facilitate modeling of multi-component systems the multi-physics simulation framework developed earlier by the authors was extended with a concept of a physical component. The approach enables one to model multiple associations between physical processes and components of the system. This modeling paradigm allows for coex istence of different models in the same region of space, and at the same time provides the possibility to confine some physical processes to certain regions. The approach is well suited for simulations of multi-component media, such as complex engineering systems, as well as biological and geophysical objects. The scope of physical modeling can range from the solution of 3D PDEs to simple 1D and 2D approximations. A mixed multi-dimensional modeling is thus possible. The approach was applied to the simu late fuel cells using a combined transport solver in multi species environment. A number of physical models were solved for different components comprising a typical fuel cell. Models for unsteady fluid dynamics, species and heat transport, electrochemistry and electric currents were com bined within different spatial domains and interfaced for common variables at the inter-domain boundaries.
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