ANALYTIC SOLUTION OF TWO-GROUP STATIC NEUTRON DIFFUSION EQUATION USING DIFFERENT TRANSVERSE LEAKAGE APPROXIMATIONS IN 2D CARTESIAN GEOMETRY

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HOSSEINI M.; KHALAFI H.; ZANGIAN M.

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Journal: JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY Year:2015 | Volume:- | Issue:70 Page(s): 45-52

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Title

ANALYTIC SOLUTION OF TWO-GROUP STATIC NEUTRON DIFFUSION EQUATION USING DIFFERENT TRANSVERSE LEAKAGE APPROXIMATIONS IN 2D CARTESIAN GEOMETRY

Author(s)

HOSSEINI M. | KHALAFI H. | ZANGIAN M. | Issue Writer Certificate

Keywords

NEUTRON DIFFUSION EQUATIONQ2

ANALYTIC NODALQ2

TRANSVERSE LEAKAGEQ2

FLAT APPROXIMATIONQ2

QUADRATIC APPROXIMATIONQ2

Abstract

Nodal is a method for solving the NEUTRON DIFFUSION EQUATION. It is categorized to analytic, semi-analytic and expansion nodal methods. In this research work, a software is developed in order to solve two group NEUTRON DIFFUSION EQUATIONs in two dimensional Cartesian geometries. There are some approaches to the analytical solution of the neutron diffusion. An interesting approach, that is our recent concern, is the TRANSVERSE LEAKAGE approximation. Based on this approximation, the two-dimensional diffusion equation is split into two one-dimensional equations and is solved analytically for each energy group. In this paper, we used flat and quadratic polynomials in order to approximate the TRANSVERSE LEAKAGE terms. Finally, two reference problems are solved for verifying the proposed method. The results showed that the ANALYTIC NODAL method with quadratic TRANSVERSE LEAKAGE approximation gives very accurate results for the reactor core calculations.

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APA: Copy

HOSSEINI, M., KHALAFI, H., & ZANGIAN, M.. (2015). ANALYTIC SOLUTION OF TWO-GROUP STATIC NEUTRON DIFFUSION EQUATION USING DIFFERENT TRANSVERSE LEAKAGE APPROXIMATIONS IN 2D CARTESIAN GEOMETRY. JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, -(70), 45-52. SID. https://sid.ir/paper/97614/en

Vancouver: Copy

HOSSEINI M., KHALAFI H., ZANGIAN M.. ANALYTIC SOLUTION OF TWO-GROUP STATIC NEUTRON DIFFUSION EQUATION USING DIFFERENT TRANSVERSE LEAKAGE APPROXIMATIONS IN 2D CARTESIAN GEOMETRY. JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY[Internet]. 2015;-(70):45-52. Available from: https://sid.ir/paper/97614/en

IEEE: Copy

M. HOSSEINI, H. KHALAFI, and M. ZANGIAN, “ANALYTIC SOLUTION OF TWO-GROUP STATIC NEUTRON DIFFUSION EQUATION USING DIFFERENT TRANSVERSE LEAKAGE APPROXIMATIONS IN 2D CARTESIAN GEOMETRY,” JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY, vol. -, no. 70, pp. 45–52, 2015, [Online]. Available: https://sid.ir/paper/97614/en

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