A FISSION-SOURCE ACCELERATION TECHNIQUE FOR TIME-DEPENDENT EVEN-PARITY SN CALCULATIONS Academic Article

abstract

• A synthetic scheme for accelerating the convergence of the fission source in time-dependent multigroup even-parity Sn calculations with downscatter is described. The low-order operator associated with this scheme is a one-group diffusion operator. Thus, this scheme can be thought of as a variant of diffusion synthetic acceleration. A Fourier analysis of this scheme is performed, which indicates that it is unconditionally effective for a spatially infinite model problem. Computational results are presented that show excellent performance of the method in three-dimensional calculations. Although this method is derived for the even-parity Sn equations, it can easily be generalized for application to the standard first-order Sn equations. The accelerated iteration equations for both the even-parity and first-order Sn equations are given, but only the even-parity algorithm is computationally tested.

authors

• Morel, Jim

published proceedings

• NUCLEAR SCIENCE AND ENGINEERING

author list (cited authors)

• MOREL, J. E., & MCGHEE, J. M.

citation count

• 12

complete list of authors

• MOREL, JE||MCGHEE, JM

publication date

• February 1994

publisher

• Taylor & Francis  Publisher

published in

• Nuclear Science and Engineering  Journal

keywords

• 40 Engineering
• 4019 Resources Engineering And Extractive Metallurgy

Digital Object Identifier (DOI)

• 10.13182/NSE94-A21484

start page

• 73

end page

• 85

volume

• 116

issue

• 2

URL

• http://dx.doi.org/10.13182/nse94-a21484