Abstract
AbstractA symbolic finite element code is used to simulate transport of a single‐species plasma in the edge and divertor of a tokamak. The physical model is based on a fluid description of the ion density, ion parallel momentum, ion and electron pressure. In modelling recycling, transport of neutral density and energy is treated in the diffusion approximation. The system of equations is discretised on an unstructured triangular mesh, thus permitting good spatial resolution near the X‐point and an accurate description of divertor plates of arbitrary shapes. S2′s symbolic interface allows the physical model to be conveniently defined using standard mathematical notation. Comparisons with B2.5 simulation results are presented.
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