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Author: Zhang, Dingkang × End date: 2005 × Start date: 2002 × Type: Text ×

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Improvements in the 2D TEP Neutral Particle Transport Calculation in Edge Plasmas (DoE Grant ER54538)

2005-10 , Zhang, Dingkang , Mandrekas, John , Stacey, Weston M.

Extensions of the 2D Transmission and Escape Probability neutral particle transport method in treating the spatial non-uniformity of collision sources and neutral energy effects are presented. These extensions have been tested by benchmarks against Monte Carlo calculations for specially designed models and for realistic DIII-D discharges. The comparisons indicate these extensions improve accuracy of the TEP method.

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Extensions of the TEP Neutral Transport Methodology

2004-04 , Stacey, Weston M. , Zhang, Dingkang , Mandrekas, John

Recent extensions of the Transmission and Escape Probability methodology and its implementation in the 2-D neutral transport code GTNEUT are presented. These extensions address the issues of anisotropy of the neutral distribution function at the interfaces and the non-uniformity of the first collision source in short mean free path regions. Comparisons with Monte Carlo for a number of model problems are discussed.

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Theory, Analysis and Code Development

2003-12 , Stacey, Weston M. , Mandrekas, John , Zhang, Dingkang , Umansky, Maxim V. , Rognlien, Thomas D.

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