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Extension of IMPMC Code Toward Time Evolution Simulation
Author(s) -
Shimizu K.,
Takizuka T.,
Kawashima H.
Publication year - 2008
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.200810047
Subject(s) - monte carlo method , computer science , impurity , kinetic monte carlo , code (set theory) , statistical physics , diffusion , computational physics , physics , thermodynamics , mathematics , set (abstract data type) , programming language , statistics , quantum mechanics
A self‐consistent modelling of divertor plasma and impurity transport has been developed. The key feature of this integrated code, SONIC, is to incorporate the elaborate impurity Monte Carlo code, IMPMC. Monte‐Carlo (MC) approach is suitable for modelling of interactions between impurities and walls, including kinetic effects, and the complicated dissociation process of hydrocarbons. The MC modelling, however, has the disadvantage for long computational time, large MC noise, and assumption of steady state. The first and second difficulties were solved by developing a new diffusion model and optimizing with a Message Passing Interface (MPI) on the massive parallel computer. The third subject is solved by extension of IMPMC code toward time evolution simulation. A time‐dependent simulation with impurity MC code involves a problem to increase number of test particles. The particle reduction method to resolve this problem is newly developed and is validated. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)