NIFS-587

FULL TEXT (PDF, 1247 KB)


Author(s):

T. Nakamura and T. Yabe

Title:

Cubic Interpolated Propagation Scheme for Solving the Hyper-Dimensional Vlasov-Poisson Equation in Phase Space

Date of publication:

Mar. 1999

Key words:

Vlasov, Six Dimensions, CIP, Conservative, Grid-Based Algorithm

Abstract:

A new numerical scheme for solving the hyper-dimensional Vlasov-Poisson equation in phase space is described. At each time step, the distribution function and its first derivatives are advected in phase space by the Cubic Interpolated Propagation (CIP) scheme. Although a cell within grid points is interpolated by a cubic-polynomial, any matrix solutions are not required. The scheme guarantees the exact conservation of the mass. The numerical results show good agreement with the theory. Even if we reduce the number of grid points in v-direction, the scheme still give the stable, accurate and reasonable results with memory storage comparable to particle simulations. Owing to this fact, the scheme has succeeded to be generalized in a straightforward way to deal with the six-dimensional, or full-dimensional problems.

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