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Author(s):
M. Okamoto, N. Nakajima and W. Wang
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Title:
On the Two Weighting Scheme for delta f Collisional Transport Simulation
Date of publication:
Aug. 1999
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Key words:
Two weighting scheme, delta f method, collisional transport, neoclassical transport, drift kinetic equation
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Abstract:
The validity is given to the newly proposed two weighting delta f scheme (Wang et al., Ressearch Report of National Institute for Fusion Science NIFS-588, 1999) for collisional or neoclassical transport calculations, which can solve the drift kinetic equation taking account of effects of steep plasma gradients, large radial electric field, finite banana width, and the non-standard orbit topology near the axis. The marker density functions in weight equations are successively solved by using the idea of delta f method and a hierarchy of equations for weight and marker density functions is otained. These hierarchy equations are solved by choosing an appropriate source function for each marker density. Thus the validity of the two weighting delta f scheme is mathematically proved.
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