3D Adaptive Mesh Refinement Simulations of Pellet Injection in Tokamaks

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We present results of Adaptive Mesh Refinement (AMR) simulations of the pellet injection process, a proven method of refueling tokamaks. AMR is a computationally efficient way to provide the resolution required to simulate realistic pellet sizes relative to device dimensions. The mathematical model comprises of single-fluid MHD equations with source terms in the continuity equation along with a pellet ablation rate model. The numerical method developed is an explicit unsplit upwinding treatment of the 8-wave formulation, coupled with a MAC projection method to enforce the solenoidal property of the magnetic field. The Chombo framework is used for AMR. The role ... continued below

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1 MB pages

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Samtaney, R.; Jardin, S.C.; Colella, P. & Martin, D.F. October 20, 2003.

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Description

We present results of Adaptive Mesh Refinement (AMR) simulations of the pellet injection process, a proven method of refueling tokamaks. AMR is a computationally efficient way to provide the resolution required to simulate realistic pellet sizes relative to device dimensions. The mathematical model comprises of single-fluid MHD equations with source terms in the continuity equation along with a pellet ablation rate model. The numerical method developed is an explicit unsplit upwinding treatment of the 8-wave formulation, coupled with a MAC projection method to enforce the solenoidal property of the magnetic field. The Chombo framework is used for AMR. The role of the E x B drift in mass redistribution during inside and outside pellet injections is emphasized.

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1 MB pages

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INIS; OSTI as DE00820114

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  • Other Information: PBD: 20 Oct 2003

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  • Report No.: PPPL-3891
  • Grant Number: AC02-76CH03073
  • DOI: 10.2172/820114 | External Link
  • Office of Scientific & Technical Information Report Number: 820114
  • Archival Resource Key: ark:/67531/metadc740247

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  • October 20, 2003

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  • Oct. 18, 2015, 6:40 p.m.

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  • April 15, 2016, 8:28 p.m.

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Samtaney, R.; Jardin, S.C.; Colella, P. & Martin, D.F. 3D Adaptive Mesh Refinement Simulations of Pellet Injection in Tokamaks, report, October 20, 2003; Princeton, New Jersey. (digital.library.unt.edu/ark:/67531/metadc740247/: accessed October 17, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.