We present the status of comprehensive two‐dimensional (2‐D) transport modeling for the tokamak scrape‐off layer (SOL) using the UEDGE and B2.5 codes. These codes are now able to integrate a variety of physics, including coupling of plasma and neutral transport leading to detachment, complicated divertor‐plate geometries, multispecies impurities, and currents and E × B drifts. These new models are outlined and the capabilities are illustrated by a number of examples that emphasize the importance of including the 2‐D geometry.
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Rognlien et al. (1996) studied this question.
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